N55 rough idle. No codes or check engine light as well.
Just replaced my valve cover on n55. , mild shuttering on hard acceleration?) Apr 28, 2017 · Car on cold start has rough idle for some seconds before RPM goes back to stable mode, also car has hesitation on low RPM , or on acceleration I cleaned the throttle body, changed plugs, tested coils, no solution so thought to disconnect MAF sensor cable before starting the car after car rest overnight , then when I started the car , it didn't Nov 11, 2021 · So i bought my 2011 n55 135i with 57k miles about 2 months ago. My pcv went bad so seals were howling once you pull oil cap noise goes away. I had nothing but rough idle issues. " 1. Everything seemed to go well with the installation. Feb 1, 2013 · Idle instability is not uncommon on the N55 w/ downpipe. The STFTs are also maxed out at idle. when attempting to drive my car after a cold start the car stalls extremely Jan 26, 2019 · For example, old spark plugs and/or ignition coils may cause similar issues such as loss of power, engine hesitation, and rough idle. I’ve double checked connections but don’t BMW N55 Engine Rough Idle: Q&A on 2BEA, DTC 28A0, 2C57 Codes Dec 4, 2017 · I have a 2011 bmw 328i that has a rough idle on cold starts only. So what are the chances of when I do valve cover idle surges go away? Let you guys know Sunday!!! While the source of this issue varies, it is usually related to brittle coolant couplings, near the hoses that connect to the radiator. Sometimes it may even be the only symptom. In a smooth running engine the average variation is ZERO accounting for detection precision. It completely cooled down and when I started it the next day the idle was a bit rough, put the car in reverse and it stalled while coasting backwards down the driveway. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 rough cold start idle and 002E0F code HELP Dec 7, 2022 · Look for a N55 that has had a significant portion of this maintenance completed. Knock sounds far different. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Aug 4, 2021 · So after all, car is running a little bit rough at idle, no weird sound, usually won't even throw check engine light. Jun 21, 2018 · Reading my F10 N55 rail pressure at idle reads 1000psi. As far as the rough idle I'm not sure if I didn't plug in a sensor or what but it now has the code 2AE1 for an oil condition sensor. Both of them were for me. I’m experiencing overboost and a rough idle again. I dont know if thats a permanent fix though e82 135i N55 2013 BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > N55 Blue smoke, rough idle on cold start (Stock 54k) Google Search Search Forums Mar 20, 2016 · The car starts (sometimes struggles but eventually turns on every time) and runs smooth for a few seconds without me doing anything with the throttle. Apr 13, 2021 · Thread: N55 p112E rough idle 101F01. After this, the car drives fine, but sometimes a slightly rough idle which is very similar after the first repair. Locked post. Rough idle in a B58 is usually related to a failing VANOS actuator. Apr 22, 2016 · When an inline 6 BMW comes to me with a rough idle and stalling on cold starts the first thing I do is unplug the intake Vanos solenoid and start the car cold. Then recovers to 700. Depending on the underlying issue you might notice power loss, rough idle, misfires, or long cranking. Today I made an interesting discovery for which I seek this group’s input. Corresponds with jerky idle. 537 Bank 1 additive mixture (idle speed) 0. F10 N55 car runs rough on cold start after it goes from high to low idle, otherwise car drives fine The following things have been recently done Valve cover. Once the car has ran for 30 to 45 seconds everything smooths out and the misfire doesn't seem to return. This is noticeable at idle at stop signs, and it can be felt in the seat of the vehicle. Both times, just restarting the car solved the problem. Romanmccollom. N55 rough idle chopping help. Sometimes it starting shuddering really bad and the service engine light will flash. Jun 22, 2021 · You were hunting around for answers and I’m aware of an issue with N55 cold start rough running/stalling/idle dip related to software of the DME. Jan 7, 2023 · Signs of N55 Water Pump Failure: Engine overheating significantly – usually rapid over-heating once the pump fails Cooling Fan running full speed (noisy) Coolant boiling out of coolant cap N55 CEL Codes for Failing Water Pump: 2E81, 2E82, 2E83, 2E84, 2E85 377A Remember to check fuses Replacement Part Water Pump for E-series N55 – $389… Aug 30, 2012 · When I start it cold, I get the wastegate rattle for about five seconds and then it quiets down and no problem at all. Sent it to my mechanic and he found that my vrsf chargepipe had blown through a bolt on the bottom, which plugs a hole I believe is designed for another add-on. The injectors are loud, the engine sounds like a sewing machine. The second time it happened while cruising and was just a loss of speed / needing more throttle before I realized it when I stopped. But once it's warm the car run fine. I have replaced the coils and spark plugs, cleaned MAF sensor and cleaned VANOS intake (top) solenoid. 8 (N62) 108k miles. Aside from that it has some rough down shifts, but it's pretty rare. I've had it for a long time, and just thought it was part of hte HPFP issue, but I've had 3 replaced, and I'm currently on the "fixed" one, and i still have it. If you will provide the Last-7 characters of your VIN, I'll recheck to see that the attached wiring diagrams are CORRECT for your vehicle. I have a 2014 X5 35i sDrive with ~155k miles on it that has an intermittent vibration at idle. 54 Throttle valve pot (Idle speed) 0. once the idle tries to drop/settle it goes crazy and runs very rough. May 6, 2019 · Signs of N55 Water Pump Failure: Engine overheating significantly – usually rapid over-heating once the pump fails Cooling Fan running full speed (noisy) Coolant boiling out of coolant cap N55 CEL Codes for Failing Water Pump: 2E81, 2E82, 2E83, 2E84, 2E85 377A Remember to check fuses Replacement Part Water Pump for E-series N55 – $389… Sep 22, 2008 · Dramuta, change the CCV (Crank Case Vent Valve), i Changed the Intake CPS(cam shaft position sensor), i cleaned the ICV( Idle Control Valve) and Cleaned the MAF, and i replaced the CCV (Crank Vent Valve) and the Hose to the Valve Cover and i still have rough Idle and Sluggish acceleration, when i press the gas pedal and the RPM goes over 2000RPM the whole car shudders and shakes and no The reason it is having the rough idle is because the intake has popped off from the This is a common issue on the BMW F30 and F32, though it is easy to fix. The reason it is having the rough Jun 11, 2023 · n55 slightly rough idle + random cylinder 3 misfires plz help As the title reads i have been experiencing a slightly uneven idle when in neutral, I can feel vibrations in the steering wheel and seat however the rpm needle is steady. g. I did the stomp test, got a code 1215 (MAF May 15, 2023 · N55 rough idle/misfire at warm startup Hey all, the symptoms are mildly rough idle/misfire when starting up from a warm engine for about 10 seconds. However, the idle was amazingly smooth before changing my plugs so I doubt its my intake valves. BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Help: 435i Random Rough Idle only on startup In my 335i, the idle was smooth as silk. Slight Stutter / Rough Idle On Cold Start BM3, MHD, ECUTek Calibrator | N55/S58 specialist | 2023 X5 45e Frozen Marina Bay Blue. Ok, like the title says, I haves 2011 535i N55 and a rough idle that only occurs on Cold start. In my 435i, sometimes the idle is smooth, but frequently it stumbles. No codes or check engine light as well. Symptoms can be more serious with certain less common causes of BMW P0171 or P0174 codes. Details on the car: Early F10 N55 with rotary n54 style HPFP Only mod is VRSF Catless downpipe and OEM M5 Mufflers Coils/plugs/injectors are relatively new (OEM BMW parts) Stage 2 MHD 91 Octane tune at the moment Oct 27, 2020 · I've been having this issue where my 2011 bmw 335 e90 (n55) idles kinda roughs during cold start. Both times the idle went horribly bad. Does the idle smoothen out quite a bit if you put the car in sport or sport +? Aug 8, 2021 · I had a very rough idle issue on my 435i that turned out to be the a bad coil. Most upgrades fixed the previous engine’s chronic issues, making the N55 far more reliable. Any ideas what I should try next? May 22, 2022 · I also have a very slight rough idle/vibration in the car that comes and goes when the engine is all warmed up and I'm sitting in park for a while, and after turning off the car and letting the warm engine sit for about 10-30 minutes and then starting it up again, I'll get a bit of a rough/long start. One of the main benefits of variable valve timing is the ability to manipulate torque and power throughout the rev range. Log of rough idle^^ Setup 2011 335i n55 140000kms MHD 1. Have to feather throttle through the "figuring out" stage of the motor, then it will idle, somewhat, but has no power and "boggs" when throttling. The below check engine light codes may point directly towards the solenoids, however, a code is not always present. Today, the idle goes to absolute crap and sets P0171 & P00BD codes only. With much time since N55 introduction, I would appreciate real life observations on whether these engines typically have carbon buildup affecting performance (e. In this video we diagnose and save a N55 that was experiencing a dramatic misfire issue. Long story short, they adjusted the idle. Is it normal? Sep 25, 2022 · Rough idle; Misfires; Slow start / long crank; A check engine light is the most common symptom of this fault code. youtube. BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) > Technical / Specific Topics > 135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications: Missing\rough idle at cold start Oct 21, 2021 · Now the car has a rough idle with no misfire codes and leaks even more oil than before (doesn't seem to be coming from the gasket) which is really confusing. it doesnt matter if engine is cold or warm,car also have slight rough idle,also on cold start and when its up to temperature Jul 2, 2019 · N55 ENGINE: FC 28A0 OR 101F01 THROTTLE VALVE OPENING ANGLE MODEL E70 (X5 Sports Activity Vehicle) E71 (X6 Sports Activity Coupe) E82 (1 Series Coupe)E84 (X3 SAV) E88 (1 Series Convertible) E90 (3 Series Sedan) E92 (3 Series Coupe) E93 (3 Series Convertible) F01 (7 Series Sedan) F02 (7 Series Sedan LWB) F06 (6 Series Gran Coupe) F07 (5 Series BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Rough Idle - Valvetronic No Codes Please Help Nov 23, 2021 · I have read that N55 engines have less carbon buildup than N54s. Dec 5, 2013 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 Pulsing Idle Google Search Search Forums Jul 24, 2023 · I have an X3 F25, 2011 with N55 engine. It is consider a fairly reliable engine and fuel efficient This can cause rough idle, misfires, loss of power and reduced fuel economy It idles pretty smooth other than an occasional stutter, so it would be hard to imagine 35k miles with dirty intake valves would cause a rough idle. My 435i has a rough idle and misfire which I can’t seem to fix. After turning the car off and starting it back again, the problem is gone and the neck snapping power is back again. Misfire detection looks at variation in the period between increment wheel pulses. 2011 X3 uses little oil - drops a quart at about 7k miles, by time of oil change. N55 very slight rough idle. the engine also seem too shake a little more If i raise the rpm a little with the throttle it seems to go away, car drives ok and no fault codes logged, bmw FSH, 36k , original coils and injectors, new spark plugs on service N55 Idle shudder / shake. bmw, ccv, crankcase, idle, n55, pcv, pressure, rough idle, valve Mar 5, 2015 · I have a 2011 BMW 335i that I purchased in September 2014. Before I start buying new pulleys and a tensioner, what other possibilities could cause this? I have no rough idles and I haven't found any codes over OBDII. A week ago when it was semi chilly, it would turn over then the RPMs would go up and down like the car was stalling for 10 seconds, then go to normal. Without port fuel injection cleaning the valves, carbon deposits accumulate rapidly on the intake valves, ports, and cylinders. Jun 1, 2024 · Past few weeks i have got a rough idle ,it sounds likes its miss firing if you listen to the exhaust. Feb 16, 2015 · I had a similar experience. Nothing is evident on the tach, and there are no codes thrown. Was using maybe 75% throttle, not WOT. Even though they’re less severe than those of the N54, they still need to be taken care of promptly and correctly. Aug 10, 2020 · My 2013 x35i usually has a bit of a rough idle for a few seconds upon cold start - then it's fine. I restart car and it idles rough with a few misfires (Misfires/ rough idle Shown in ISTA) and then it smoothies out a little. Loss of Torque and Power . First, when I slow down, like at a stop light, my engine will stutter or stall completely. I have cleaned the MAF & inspected the charge tubes with a flashlight and inspection mirror looking for cracks or leaks. I would greatly appreciate any insight or help. I used a VRSF all aluminum design for both of the parts. com/watch?v=vlfTE31VlOwPatreon: https://www. The issue was so bad that the car was sent to auction as it stumped 2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Intermittent Rough Idle Issue, Mass Air Flow Possibility Google Search Search Forums Jul 20, 2019 · Idle hiccups or a constant rough idle; Slow cold starts; Limp mode after acceleration; How to Diagnose and Repair a Failed Dual VANOS Unit. Belt, Tensioner & Pulley: https://tinyurl. 2. I have 2011 6MT with PPK. May 8, 2010 · Recently reassembled Vanos - Rough Idle Hi, been searching around for an answer to this issue: 1. I have a 2011 bmw 135i with an issue that seems to always run lean. I'm almost positive (and I don't know much) that the allen screw on the valvetronic motor needs to be adjusted or fine tuned. The sound you hear is the valvetronic motor doing its thing. Aug 14, 2024 · Car: e90 335i, N55 manual. Solution is to press accelerator pedal, hold it steady in one position, wait for 15-30 seconds and AFRs go back to normal and car can idle without issues. I'm thinking issues could be ; internal damage My stage 2 n55 (102k miles) began releasing white smoke from the exhaust, RPMs are jumping and stalls if it idles. Throttle reset process (fuel vent disc, 10 throttle presses, idle 15 Jan 6, 2016 · Rough idle. A few months ago the car started to exhibit the typical valvetronic failure symptoms, rough idle, servomotor binding and going nuts when the car wakes up, and eventually drive train malfunction with the expected "adjustment not possible" fault codes. Apr 25, 2016 · Few days ago I purchased a 2011 535i CPO, M-Sport. Unlike the single VANOS which usually needs to be fully replaced or rebuilt, the majority of the time only the solenoids need to be replaced. Feb 22, 2023 · Initially, that car jumps right up to normal idle rpm (1250ish) but after a few seconds it drops down to around 750 rpm where it stumbles for a few seconds and then shoots up to about 2100 rpm and then back down to the original 1250ish rpm. This leads to symptoms like: Loss of power; Rough idle; Misfires; Reduced fuel economy Jul 28, 2021 · This is the first of several articles in our series on diagnosing and repairing BMW rough idle issues in BMW vehicles. If it's really cold it even stalls. What I noticed with both vehicles was the idle was not smooth, it was "lopey" and I wondered if this was the norm for the N55 or if maybe since we've recently read some idle issues with the N52, is it valvetronic causing the idle issues? Jun 9, 2022 · Because of that, any issue with the VANOS system can easily lead to rough idle issues as the engine isn’t getting the right timing adjustment post-startup. Before parking it for the winter, I noticed a few times when I would start the car, it would idle rough and when I moved off to drive, there would be no boost from the turbo. Oct 6, 2010 · The car will start up every time, but it will just idle as terrible as ever. Jul 31, 2021 · my engine idles rough after cold starts and when i'm in gear, mostly when in drive and reverse but it does happen in park and neutral but not nearly as severe originally had codes for my vanos solenoids, after replacing both with brand new oem replacements the rough idling hasn't gone away. Feb 23, 2020 · Clicking/grinding noise from what sounds like Valvetronic gear and eccentric shaft. I am trying to narrow down the cause of rough idle/Misfires after an Operating Temperature Re-Start. No avail. Cheers. But once it’s warm the Nov 8, 2012 · BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) > Technical / Specific Topics > 135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications: Car rough idle and stuttering - but only when cold Oct 2, 2023 · N55 Rough Idle troubleshooting advice Jump to Latest 1K views 5 replies 5 participants last post by Sly535i Jul 30, 2024 Aug 10, 2016 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. HPFP, LPFP? Injector? Haven't noticed that rough idle yet! Appreciate 0 Quote 04-13-2020, 12:35 PM Sep 10, 2023 · One of the most widespread problems on direct injection engines like the N55 is intake valve carbon buildup. Appreciate 0 Quote Jun 4, 2020 · After car is started (no matter hot or cold, time between hot starts does not matter also), idle is rough, after couple of seconds AFRs go to ~20s and stay there. 5 Remanufactured OEM HPFP NEW Bosch High Pressure fuel Rail Sensor New Continental FPR NEW OEM injectors NEW Delphi Coilopacks NEW ValveCover (I think rein) New Shuenk Inlet pipe (metal since plastic one cracked) New ER outlet pipe Has I've been dealing with a sh*t ton of issues on this N55 and I am just about ready to give up on this car. Sep 12, 2019 · Third repair: Just after the assembling and starting the car, the car went to the limp mode immediately saying the exhaust camshaft is off timing. Hey all, the symptoms are mildly rough idle/misfire when starting up from a warm engine for about 10 seconds. I am running rich with LTFT value at -4,69% On top of that I have rough idle and engine code 101F01 I checked O2 sensor with ISTA D and I am finding some values but I am confused. Thanks! 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq Dec 14, 2021 · BMW N52 Rough Idle No Codes , Rough Running , Loss Of Power (Here Is The Fix) Add Me On Instagram @BMWDoctorOfficialGo to My Spotify Playlist which has all i My friend has a 2011 135i, with the N55. My 335i is at 78k miles but I'm not sure whether or not the intake valves have ever been cleaned. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. I watched the PCV/CCV video - I'd call that "wandering idle" or "hunting idle". If you've made it this far, thanks so much for looking it over and sharing your thoughts, or if it sounds like two totally unrelated issues and the idle is normal for an early N55 E90. N55 VANOS Solenoid CEL Codes: 2A9A, 2A9B 2A82, 2A98, 2A99, 2A87 Replacing Your N55 VANOS Solenoids Jun 3, 2023 · I can get it to start. May 27, 2014 · The tensioner and belt were replaced in 2012 after a pulley seized. Put in a brand new set of Bosch spark plugs and Delphi coils. Nov 16, 2021 · Also something to note, after doing the hard driving I parked the car for the night. But often when slowing at a light (in neutral, coasting) idle dips to 500 and gets pretty rough. 2000 miles or so later it has improved but i still feel a hesitation as i’m idling down off cold start that wasn’t there before ! Oct 11, 2023 · Been working thru a problematic 2011 335xi N55. Twice now I have had my 2011 335i seemingly stall out, meaning the engine doesn't die, but it won't rev. When I took it to a local mechanic he said it's the high pressure fuel pump that's gone bad. I own a 2011 BMW 335i e92 6mt with N55 engine currently running Jb4 and MHD BEF. The idle is slightly rough and can be felt while inside the car. When my stock engine from my vr4 was misfiring and was sounding really bad at idle, rough puffs from the exhaust I knew somethign was wrong, I also had the car started and took the oil filler cap off to check for piston ring blow by caused by broken rings or melted pistons. I can still see the motor distinctly shaking from how rough it's idling. Hello, I have a F30 335i N55 6 Speed and I've been dealing with a engine shake with varying frequency at idle. Show Printable Version; 04-13-2021, 12:06 AM #1. com. Jan 19, 2022 · N55 wierd Idle behaviour Jump to Latest 5K views 7 replies 5 participants last post by HotGrbg Jan 21, 2022 The BMW rough idle is now finally solved!UPDATE: Rough Idle is NOW FIXED: https://www. Rough idle on n55 pwg . Appreciate 0 Quote 01-06-2016, 09:26 PM Feb 21, 2021 · Smoth running / misfire detection can even differentiate rough road from not smooth running misfire. I can also feel it while cruising on a highway (this happens very rarely and when it does happen, its so mild that sometimes I cant tell if its the crappy NJ roads or the engine). Does anything ring out as a possible cause. NOT sure why you have P0171 (Bank 1 Too Lean) and NOT P0174 as well (Bank 2 Too Lean). I could use some help troubleshooting my F10 N55 PWG via ISTA+. N55 community has a hysteria around this. Previously had E39 525i and E60 525i but both of them had smooth idle. The car had some valvetronic codes I didn't know about, apparently the issues was "fixed". Been to 3 different garages now who don’t seem to understand what if anything is wrong as no codes are thrown. Idle issues are tough to troubleshoot without looking at live sensor data (namely O2 sensors and short and long term fuel trims). The jumping will progressively get worse over a few minutes time and it will idle kinda rough when stopped. Today the engine light came on. That sounds like every n55 I’ve owned. Top 10 Parts That WILL FAIL On Your BMW N55 Engine After 100K Miles Add Me On Instagram @BMWDoctorOfficialGo to My Spotify Playlist which has all intro song 2014 N55 F30 idle stumble/hiccups. After cars warmed up I shut it down for an hour. Sure, there are other things that can cause these issues, but testing the Vanos takes 30 seconds. Car normally idles at 700 rpm. Hi Gang, I'm a long time lurker on this forum for DIY projects and just joined because I'm getting frustrated trying to diagnose the following issues. There is zero moment on the tacho when this is happening. Aug 23, 2023 · Hello. The idle smoothes out if I simply unplug the MAF sensor! I’ve been driving with MAF unplugged for a day now and if I didn’t know better I’d call this totally fixed. 663v 335i N55 Rough Idle - Multiple Misfires I have been having an issue that i would truly appreciate your guys' input on it. Bimmerpost ☰ Model Selection. What I have done Replaced HPFP sensor; Replaced HPFP; Replaced tank FP; smoke test for vac leak, good. Not too long ago, my power steering hose was rubbing on my timing belt (serpentine belt) and eventually rubbed enough to cause a nice big hole and leak all over the belt which caused a chaos as far as how oily the car got. I just recently bought an 2012 N55 e91, 100k Miles on it, and a couple of days ago, i started to notice that the idle is very rough and not as N55 ticking&rough idle Hi On my 535i f10 there is a ticking sound coming mostly from underneath and right wheel arch,its not so pronounced from engine bay or left wheel arch side. What N55 Spark Plugs are Best? OEM N55 spark plugs are an excellent option for N55s under 400whp. N55 PWG "Rough idle" no codes How goes it bimmer squad. She eventually turns off after struggling to stay on. Car will start immediately but run very roughly. The vibrations happen about 80% of the time the car is idling, and only when it's warmed up (when idle drops to ~650). No stumbles. However, if I drive it say to work, and then I drive it around noon, when I start it, the idle will be up and down between 600 and 1300 RPM. Technicians response: "Need idle adjustment with test plan connect battery charger, Short tested and found fault in system, Performed test plan for idle adjustment and quick cleared, Tested system again OK. I have a PWG N55 that I just put in a new LPFP, spark plugs, injectors and coil packs in. I figured I’d mention it as it could have been a cheap fix other than inconvenience of the trip to the dealer for the ISTA-P/ISTA4 update. From a cold start, if I leave the car idles a bit longer then it leads to rough idling and engine light, but if I start driving when it drops to 600-700 rpm then it is fine. BMW N55 Fuel Trims(rough idle+lean code) Code is p0171, i believe it adding 25% long term is meaning it’s adding 25% more fuel to try and keep my AFRs safe but is maxing out as short term is in the negatives. 5k-2k RPM, semi-regularly. Jun 30, 2017 · F25, 35i, N55 small scale rough idle Hi All! After selling E83 35d, I bought F25 35i, N55, 2011. Once car is warmed up I have a perfect idle at 600 rpm. 60 Stage 2 91 octane Catless downpipe Codes 2774- Air volume, Plausibility: Air Volume too high N55 Rough Idle / Stall on Cold start Ever since this cold weather, my car has had some trouble when starting up. 064 Multiple active mixture (partial load) -4. Eventually the motor will somewhat smooth out (after a few minutes of not touching anything), but intermittent backfiring into the intake will occur. CAR USED:2013 BMW X3 2. 2011 bmw 335 N55 engine, idling a little rough after valve cover replacement. View Profile View Forum Posts Member. Alternatively, go for a newer, lower-mileage N55. right after that i got a code for my MAF which i replaced immediately upon discovering the code. P112f might. At first i was worried that it was a blown head gasket. There was a time I did oil change and forgot to tighten oil cap my idle surge was insane I had to pull over and check. If setting FUA = 100 didn't help another thing to try is putting the MAF connector #3 back to stock leaving the JB4 MAF plug sitting out of the way. F15 N55 rough idle/misfire at warm startup Hey all, the symptoms are mildly rough idle/misfire when starting up from a warm engine for about 10 seconds. E81 / E82 / E87 Mar 27, 2004 · agree with DMan328. Recently i have come across a extremely rough idle and weird bogging and stuttering while driving i also noticed after a cold start my rpms dip hard and the car begins to run extremely rough i will link a video of this happening below. My n55 also does idle surges. However, the N55 isn’t without some issues of its own. Mar 23, 2020 · This engine diagnostics video is part of our BMW E9X Ownership Series but the N55 can be found in a ton of other models in the BMW lineup aside from the E9X Dec 24, 2022 · The N55 features several much-needed improvements over the issue-plagued N54. RPMs bounce around 5-600 and car shakes pretty bad. I’ve been having this issue where my 2011 bmw 335 e90 (n55) idles kinda roughs during cold start. However, now it’s running rough at idle. 1. Rough Idle. N55 Misfire/rough idle issues. May 16, 2023 · N55 rough idle/misfire at warm startup I know this isn't an F15 subforum but I think there's more activity here then the f15 side but it's the same engine. So, just driving normally and suddenly the RPMs drop to idle and mashing the gas produces no discernible result. Along with codes Feb 22, 2021 · I am NOT personally familiar with your N55 engine, so the following is from ISTA for E90 335i with N55 built October, 2011. I am full bolt on (oversized intercooler, charge pipe, down pipe), pure stage 1 turbo w/ blow off valve, tuned with bootmod3 to stage 2. I think I was pulling maybe 4. 78 Bank 2 additive mixture (idle speed) 0. May 4, 2020 · Thank you all for tuning in to Super Mario Diagnostics! Today we are working on a 2013 BMW 325i N55 F30Concern is hard start and stalling. Heres the thing tho, if i turn the car off and back on it will stop for like 10-15mintues before it starts over again. 0Link I find this rough idle, stumbling at low speed curious and am hoping to hear the experiences of people either having it or not having it with various plugs and engine mods. Feb 27, 2020 · Old, worn spark plugs may cause several problems such as misfires, rough idle, and cold start issues. patreon. A kind of irregular stutter that i can feel in my seat and on the shifter. F40Model Year: 2019 + Previous Generations; F20 / F21Model Year: 2012 - 2018. Without loosening the tensioner, I took a look at the belt to see if I could see any wearing, but it appears ok. 2013 335i N55 rough idle with surging Hi guys, so I just replaced my charge pipe and front mount intercooler this weekend after walnut blasting my valves. It may be smooth but doesn't properly settle and hold a definite idle RPM. Hey guys! Today I wanted to show you how you can potentially fix your bad idle on BMW 2001 or newer with the simple use of ISTA+. The idle will be extremely rough and low or it may stall. I replaced them all and the car runs like new. He has to open the valve cover again and did the camshaft timing. Even my brother in the passenger seat feels it. You Can speratly change the Dec 12, 2023 · The BMW N55 is known for its performance and tunability. I was curious if any of you guys have had this issue on either your F15s or even just the N55 in general. My valve cover did not have the two vacuum hoses on the side of the valve cover or the vacuum hose coming off of the top. Currently what’s been done: New LPFP Raceworks v2. New Elder ignition coils, new Bosch plugs and a new Valve Cover. 048 Multiple active mixture (partial load) -6. The VANOS system can cause rough idle and other drivability issues if the actuator malfunctions. 2011 N55 recently done the same - had the same rough idle, only no codes nothing. Interested in having wastegate actuator reset but no one seems to want to touch it as codes aren’t generated. One was during a little bit of pull. In any event, it won't hurt to try. After that though it ran fine, but also was sputtering/dying during the next cold start. Jul 17, 2017 · There is still some intermittent rough idle that causes occasional stumble on initial acceleration. The two events were spaced a month apart, despite daily driving. I found a maitenance record for the replacement of the motor, but I called the shop and talked to them and they said the motor was still stuck in one position and basically the car runs but Feb 10, 2021 · In bmw F10 ENGINE N55 has the most common problum is the blockage of valve cover or pcv valve which is causes engine rough idle. One thing that is bothering me is the intermittent rough idle this N55 engine has but nothing visible on the RPM indicator. Even though we used a 2006 530xi touring wagon to perform this repair, this article can be applied to any BMW vehicle with minor modifications to the repair steps. com/beltkitBit & E But I just did it twice on my N55 335i. But don't worry. Coils, plugs, vanos solenoids all replaced w At idle on a warm engine, no fan or A/C, I'm getting a rough idle. E81 / E82 / E87 / E88Model Year N55 stalling/stuttering/ rough idle sometimes Hi, I’m running into some issues and I really have no idea which way to go. This only happens with cold starts. Oct 5, 2011 · Little thing was a rocket FWIW and the DCT was very smooth. Fix that rough inconsistent idle and squeaking coming from your BMW engine bay in under 30 mins. 5k in 2nd and it popped. I keep getting a rough idle. com/GeorgeA Aug 26, 2022 · Rough idle coming from 2011 e90 n55 Hello guys! Over the course of a few months I have started to work on my n55, adding bolt ons such as a vrsf charpipe, bms intake, vrsf fmic, vrsf catless dp, and a mhd stage 0 tune and a xhp stage 3 flash, I run on 89 with a burble tune. A rough idle might hold the proper RPM overall, but have sputters, pops or trembles you can feel and hear. Currently, I have done the following maintenance items in the last 6,000 miles. Jul 8, 2012 · The update resolves various N55 issues including rough idle and twitchy acceleration under certain conditions, and may be helpful in your case. I had original BMW brand plugs with 65k miles in my 07 335i and after switching to Bosch equivalent model spark plugs the rough idle started. I am not finding any leaks. Rough idle, almost would not run - 1st time set codes (misfire on 3, 5) and found Vanos 3 hole spring plate clamp (outer 4mm ring) was loose (must have tightened it against the shoulder, not fully seated vibration broke loose-- immediately May 12, 2021 · I have a 2011 e90 n55 mhd stage 1+ and had a rough idle with car dying randomly. I also put in brand new injectors and coded them with ISTA. N55 rough idle. Aug 4, 2023 · I also have an N55, and had the engine stalling/stuttering and I deleted the adaptation values of the motor control unit and it has disappeared since. Mar 5, 2012 · Cust States at start up the cars idle fluctuates and surges between 800-1200 RPM. Rough idle can be caused by a variety of issues. I also noticed the smaller gap on the new Bosch plugs but figured since they are not suppose to be regapped to just leave them that way. F40Model Year: Dinan CAI/N55 PWG BIG TURBO|BMWF30. Here are the codes: 101F01 Throttle Valve opening angle absolute pressure intake pipe comparison pressure too high 118001 Mixture Control: mixture too lean 118401 Mixture control: Mixture too lean, large deviation Dec 12, 2008 · idle speed air adjustment -4. Hi, I have a 2011 N55 335i. Thread Tools. Why is my N55 Idling Rough? Rough idle is a widespread issue with many BMW engines, not just the N55. You could disconnect one coil at a time to see if you notice a difference. Always use 93 octane gas, and regular service (although local dealer mechs are challenged merely trying to spell BMW). Quite a lot milage (143k km), but still in a very good shape. Mar 25, 2023 · I'm looking for some help to solve a rough idle issue I've had for a long time. I’m unsure where else to look/change. When I turn car off and then turn just the ignition on I can see the rail pressure climb from 1000 to over 3200psi. Similar issue as the N55. E81 / E82 / E87 The car starts and idles very rough for a few seconds, also feels like it’s gonna stall out when coming to a stop the RPMs drop down to 400. If it’s really cold it even stalls. Recap Rough idle: improves with higher RPM, such as with A/C on, but still feels like an occasional miss at freeway cruise Sep 16, 2017 · What it is: Rough idle, low/no power, hesitation, stalling Codes: Misfire Detected all cylinders except #4, Cylinder Deactivation System (Bank 2); codes pulled from Bosch Enhanced ODB I & II Scanner at local parts store MIL: Engine light, static and/or flashing 2009 X5 (E70) 4. So, if yall remember me I have that shitty 535i that is always broken! Anyways, I have had every gasket replaced, 15K in receipts from an amazing warranty company drives great overall, but I have an issue that has stuck with me the whole 2014 335i xDrive, N55, Auto 8-spd, 79k miles Catless DP VSRF Charge Pipe BootMod3 Stage 2 93oct xHP Transmission flash Issues: Rough idle Occasionally dies at idle Occasionally dies at stops Sluggish power Extreme stutter at ~1. . E81 / E82 / E87 BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > 2014 f30 N55 cold start problem Google Search Search Forums P2421 wouldn’t cause the idle issue. I had an N54 prior to this car and I'd much rather prefer that car over this POS N55. Jan 12, 2019 · The title of the thread has "rough idle". When I accelerate, O2 before Catalyst goes in the red sometimes. Vehicle currently starts but has trouble maintaining an idle with numerous misfire codes and fuel cut on bank 2 (cyl 4-6) I've attached some Ista data. iitshzq sela uhzxq vwbd tahyns rjou ukdw rwycg pcva zzlyuyq