N54 idle surge. Throttle potentiometers question .
N54 idle surge. Apr 16, 2009 · I noted that the engine idle dipped under certain conditions to the point where the vehicle would shake. 1; 2; First Prev 2 of 2 Go to page. Aug 16, 2021 · The vacuum has to pull against the spring to open it. It felt as though it was coughing or hiccuping first thing in the morning. Ran good for a week or two then started to act up again. 1. When I'm driving, the engine runs smooth. Dec 3, 2012 · Pull the lower vacuum line off the F connector from the intake boot just behind the MAF. As soon as the temp needle is out of the 'blue',the car idles perfectly. - Car has roughly 145k on it. My code reader shows the following codes: P1638 - Throttle Valve Position Control; Throttle Stuck Temporarily P1632 - Throttle Valve Adaptation; Adaptation Conditions Not Met P3026 - O2 sensor temperature measurement operating temp not Nov 9, 2020 · Fuel pump, injector and yes give the reset throttle adaption a try, given your replacement. Car will restart, but immediately idle rough and within 10 seconds shuts down. Good evening all, Been noticing a slight surging when holding steady speeds or when using cruise control. Mar 16, 2022 · Original stock N54, current odo ~82950 mi, filled w/ Chevron or Shell acn 91 (I know) As of ~82900 mi New VRSF N54 aluminumn outlets New custom Stage 2 LPFP Walbro 450 upgrade As of ~81600 mi: MHD Stage 2+ ots tune XHP Stage 3 v3. It does that on cold and also on warm engine, there is no long crank, car starts in normal way. The air reverts back toward your intake filter and gets chopped up by the compressor blades on the way out and combined with the new material of your inlets, that is making the squealing sound similar to the party toys. I had assumed this to be a characteristic as my old car (also turbocharged direct injection) did the same for the 2 1/2 years I had it. Jul 28, 2021 · This is the first of several articles in our series on diagnosing and repairing BMW rough idle issues in BMW vehicles. It stays at 750rpm at idle, until I switch the engine off and on, which then it reverts back to normal 600pm. Drives: 2007 335i Coupe. These cars ran beautifully with the MAF unplugged, and this was due to a vacuum leak. 08 mg/s at idle, about 0. Aug 1, 2016 · All seemed well, save for the alignment being out and a slightly rough idle when cold. New solenoids,thought I fixed it. Intermittently my car will be idling fine then all of a sudden hiccup like a misfire , afr goes lean (up to 18s) runs a bit rough then all of a sudden a couple moments later fix itself and run like nothing ever Oct 6, 2019 · Hello, for about 7days already i am having wierd problems with my car. N54 . Sep 27, 2018 · I have a 2011 z4 n54, and when i come to a stop idle bumps up to 800-900 rpm's for a second. I bought a new coil for cylinder 1, did not help. Oct 7, 2021 · Hey guys, I have 2008 BMW 535i with the 3. Had this happen twice lately upon startup. Hi all, I've got an issue than I've been putting up with but am now ready to fix it as I'm taking the car on a long 8hr trip this Friday! When stopped, the rpm will drop about 150-200 rpm then spike back up, this causes something to rattle. does anyone have any ideas?? no idiot lights all else is normal ? Tony R. The turbos are building boost, the throttle is closing due to something being wrong in the tune, etc, etc, etc insert reason for throttle closure here. I have reset Throttle, Octane, and idle adaptations, turned car off, waited 30 seconds, turned on key, waited 30 seconds and started the car and the surging continues. During that time the pedal was un-responsive for the most part. Join Date: Oct 2007. Apr 4, 2017 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Surging or oscillation at light throttle, low rpm iTrader: (0) SOLVED: N54 Oscillating throttle position/surge at steady speed. Bimmerpost ☰ Model Selection. Nope. It is acting wierd on idle. One thing that does happen that I'm hoping may give some insight to someone is that if I let it go into limp mode, the idle smooths right out. B. So now the BOV is open at idle. The duration of this "shake" is very short but it repeats over and over randomly. If you clear all codes before the car starts, it still has some surging idle, but there is throttle response. Prev. Lighter spring = faster response, and a safety net for on throttle surge by opening, and venting boost waves created by pressure differential. com/collections/3-series-e90-e91-e92-e93-m Aug 16, 2021 · Most N54s should draw the same vacuum at idle IIRC on a warm n54 you should see around 16-18 in/hg? With the 1/4'' ID line from the IM and that my BOV stays closed at idle and instantly opens the second I lift my foot I can't complain and have no reason to think a spring change would help me in any way. 2007 335i automatic MHD stage 2 catless down pipes DCI Charge Pipe with TIAL style BOV New plugs New coils anyone have Apr 2, 2021 · what’s up guys my 335i recently just stopped turning on and only turns on if jumped. NeedsMoarBoost Feb 10, 2023 · BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > N54 misfires and rough idle only on cold start and when temperature is cold outside Hey guys , Had a fast question to see if anyone has had this issue happen to them. Any theories? N52 random rpm surge at idle. Two visits to the dealer service center resulted in no resolution. Surging idle, E92 N54Update! This ended up being a broken Throttle body. BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > n54 335i rough idle/misfire startup when car is warm. I don’t get it why does this N54 prefer a wider gap in the plug in order to idle smooth. May 16, 2017 · This is an interesting article. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > NEED HELP: stall, roguh idle, surging idle Dec 2, 2014 · The idle only surges when stone cold. If you give it gas, you can actually lower the surging RPMS by slowly easing off the gas. Throttle potentiometers question E90 LCI N54 6AT. F40Model Year: 2019 + Previous Generations; F20 / F21Model Year: 2012 - 2018. Instantly replaced the two injectors with brand new ones. The car now runs worse after it warms up and ONLY at idle or very slow speeds, such as letting the car idle in D, it almost feels like the tranny is slipping but it's definitely mini misfires. There are zero downsides to going with a lighter spring unless having the BOV open at idle bothers you that much. May 6, 2018 · Bank 1, 0. oil temp around 120) - at idle (e. How does Tony diagnose this damage as being surge VS too high of axial load? A quick test, before a smoke test or checking vacuum lines, is to unplug the maf. So to reduce surge and delay I went with a lighter spring. About a couple of months ago, my car began having a rough misfiring idle (like it was going to stall) when I started my car. Normally upon start you see the engine rpms at around 1000rpm then after about a minute they would go down to 600 rpm idle. Start with getting the codes sorted then work through whatever problems remain after. I pulled the codes with my scanner tool and I am getting codes 2D09 and 2FCB both throttle body related. The N54 engine has forged internals, meaning it can handle an immense amount of power without… Feb 27, 2015 · The low temperature morning starts have really accentuated some issues with my engine. Appreciate 0 Quote 01-09-2022, 08:37 AM 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: N55 Idle Fluctuation/Surge + Codes Been chasing a cold start misfire and popping on idle with my N54 since May when I took it out of storage. Zero wastegate rattle, Idle is smooth as glass, boost comes on very strong and very quick, and I have no compressor surge. There should be a 4 inch piece of 3. Here is a video of it. If I start it up,idle for a few seconds and drive away,I never noticed it. Jan 29, 2024 · Help! idle surge and no throttle. I tried to get a video but the issue doesn't come through very well. Will post some maintenance mods in comments. Jul 7, 2018 · I have a 2007 BMW N54 335i Sedan with 115k miles on it. Second, the Angle of Throttle Valve and Intake Pressure Sensor codes happened at the same time. Fast forward a few months and I'm noticing really really inconsistent boost targeting. iTrader: (11) 335i N54 surging idle, reduced power, dsc malfunction. However, there is a common misconception reg Nov 14, 2020 · The BMW rough idle is now finally solved!UPDATE: Rough Idle is NOW FIXED: https://www. g. 0l N54 twin turbo engine. Plugs and Distributor: You may need to replace these to solve your problem. On a cold start (engine being off for 10+ hours), the car cranks, starts, then starts to shutter and shake and unless I give it gas, it will stall. Before the replacement it would idle perfectly. This sub-reddit is dedicated to everything related to BMW vehicles, tuning I have E92 335i N54 with DCT, modded to stage 2+ with all supporting mods ( over 5 years). Took it to an Indy shop and they fixed a vacuum leak and that pretty much fixed the rough idle. Idle is bouncing up and down randomly, sometimes its ok sometimes its not. I however don’t have a way to check them before Mar 16, 2022 · Everything is up and running, but at idle the car seems to stumble, with rpms dropping suddenly. Seems to be more noticeable in sport mode. New plugs, new coils, new index 12 injectors all in the last month. (Highly recommend) MHD Vacuum readings (see how much psi you are losing. I've dealt with multiple cars with similar issues; misfires at idle, surging idle, etc. Appreciate 0 Quote 06-19-2012, 08:27 PM #4: ChuckD05. r/BMW. help? In this video, I’ll share BMW ROUGH IDLE FIX! HOW TO!Check Out My BMW N54 335i Setup ⬇️ :JB4: https://burgertuning. I May 15, 2017 · The screeching sound is created when your bov doesn't open fully (or soon enough), and the boost hits the surge line. When it starts up the idles surge between 1k-1500 rpms I’ve replaced the throttle body,checked fuses, any intake leaks. Feb 13, 2023 · The car starts with the limp mode light on and has 0 throttle response, and hunts (aggressively) for idle. Took to 2 different mechanic and no one knows the problem. Popped them back in and now the car runs perfect. Turning the car of and on after the intial cold starts is fine, the revs don't go up and down unusually. Apr 7, 2020 · Now I have this idle surging that is really bad. Simply put, the vehicle cannot consistently maintain an idle. So they can play around with it and find a happy idle RPM for your car which smooths out your idle. Jan 5, 2015 · 2007 BMW 335i N54 6pd manual; JB4, ER charge pipe, HKS Blow off valve, BMW Dual cold air intake, VRSF down pipes, BMS and VRSF spacers, St Kw coilovers Dec 4, 2017 · The BMW N54 engine featured in the 135i, 335i, and 535i is one of the most tune-able engines ever. We often receive emails asking about the 10psi spring that comes pre-installed into the TiAL Q BOV, wondering if it is sufficient for holding boost on an N54 making 20+ psi. com/GeorgeA When the car is fully warm (e. I made this recent video on my youtube channel explaining some things about vacuum lines on the N54 and how important they are to making boost. Idle Control Valve: Dirty idle control valve is a very common problem in BMW E36 cars that may cause rough idle. 3 at about 2500 RPM {drops, then rises back up smoothly going from idle to 2500 RPM, then back to idle}. Another thing is to take your plugs On idle, constant throttle at 1500rpm, tach will hunt from 1500-2000 back and forth. I replace the TMAP sensor. Nov 8, 2020 · N54 Idle Surge? Help needed. It only happens at idle or low rpms. I've checked for vaccum leaks and could not find any. My first thought was injectors so I pulled my plugs found cylinder 1&2 wet. Dec 13, 2017 · The most common BMW N54 engine problems include high-pressure fuel pump failure, wastegate rattle, clogged or leaky injectors, chargepipe failure, valve cover oil leaks, carbon buildup, VANOS solenoid failure, and water pump failure. Hi everyone, I've been having a throttle problem with my 2008 BMW 335I w/N54 engine. F40Model Year: 2019 + Attached are ISTA ScreenPrints related to 6/2008 build 335i E90 N54: Mar 21, 2021 · Ever since the replacement of the purge solenoid the car will have an intense idle surge aprox 500-1000 rpms repeatedly, as if someone is reving the engine, and it only does it with the ac on. Dec 20, 2021 · N55 surging/pulsing while cruising It was a huge issue with the N54 cars from the research that I did. When i start the car in the morning, the RPMs go a little crazy. There's likely more than one thing going on with the car which is pretty normal with an N54. - My car start to misfiring on idle, so i put new sparks NGK 97968 with gap. 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. Location: Dallas,TX. The TiAL Q is one of the preferred BOVs for the N54 engine, it is reliable, strong, and looks good. 1100-1400 RPM or so. Jun 7, 2022 · With complete monitors the surging shouldn't occur. The car turns on but the engine does not idle correctly. You should also hear a very distinct noise when surge occurs and have evidence of surge on the compressor wheel as well. At idle it should be around -14psi) Chargepipe Diverter valves and associated vacuum lines Chargepipe to Intercooler coupling Vacuum canisters and vacuum lines that run over the valve cover all the way to the brake booster hose Boost solenoid vacuum lines Nov 16, 2021 · Hello, i am having an issue after letting off the throttle and easing back into the throttle the car will have a bucking feel to it. 11%, Bank 2 3. The issue does Hi everyone, I've been having a throttle problem with my 2008 BMW 335I w/N54 engine. Especially on one flat road I use for work. Thread starter N54savage; Start date Nov 8, 2020; Tags idle n54 Forums. You can use this DIY (Do It Yourself) to learn about Cleaning E36 ICV (Idle Control Valve) 3. - Car has not received a walnut cleaning as of yet Idle surging. . still nothing. 5MM vacuum line and about three feet of hard plastic line and then another 4 inches of vacuum tubing where it attaches to the fuel pressure regulator. Car would run very rough, surging about 400-500 RPM at a time, followed by the engine shutting off. Sep 27, 2018 · The only other time I had a 90% dead pedal was when I had a 'New in Box' HPFP turn out to be defective and it would sputter, idle hunt and surge and then stall for about 10-15 seconds. May 15, 2017 · So I'm running a tial but with out a 1/4 signal like it demands. Go May 17, 2021 · I've been working on this issue for a few weeks. I only discovered the surge when the weather turned cold,and I let the car warm up before driving. It's not a misfire. At idle, the RPMs will fluctuate a bit, but there's that constant shaking feeling in the seat. Jul 5, 2011 · 2. 08’ 335i N54 - still trying to fix issue with rough idle/surging rpm’s really only when coming to a stop and trying to take off the car kinda stutters, i’m thinking maybe hpfp/lpfp? Or exhaust leak, vanos, cam sensors? What would cause this to happen, thnx. Still had rough idle. I have noticed a corellation with surging and voltage readings aswell. Rough surging fluctuating idle is gone. My current issue is the car will surge at idle between 1000-1500rpm up-down-up-down-up-down. While driving 1500-2000rpm you can feel surging, Passing through 3000rpm, you can feel power loss then it picks up at 4000rpm. Chris May 15, 2017 · Also, this is the 100% perfect storm for on throttle compressor surge to destroy your turbos in short order. (do it right, otherwise you idle will be all over the place, it should at least be in the state as before your throttle body replacement) You will most often not get a code when fuel issues causing an instable idle. While driving I can repeat each situation (minus idle tests) with physical throttle input and cruise control. Month ago i was traveled with car to long trip vacation with my 335i, so after we went back from vacation. Some people call it the ‘2JZ’ of German engines, but we think the N54 is on a whole new level. I just havnt had the time. Over a period of several months the situation continued but an additional idle issue developed. We changed eccentric shaft sensor and motor, coils, spark plugs, crankshaft sensors, and vanos check valves. Wife has an n52. The idle is kinda rough sometimes and by rough I mean it has some moments when it "shakes" as if the cylinders were out of sync or something. , Sep 27, 2018 Apr 19, 2020 · E92 N54 335i power loss and rough idle after driving high speed The revs seems to drop up and down until it stabilises at around at 600rpm on a cold start. Bad mileage is typically injector related but bad O2 sensors can have a similar effect. After much flashing and testing I now have the FF module removed and the car is flashed to stock, and still surging. Idle hiccups and then begins surging up and down. com/watch?v=vlfTE31VlOwPatreon: https://www. Water was also Jun 15, 2017 · My N54 has never ran this well even when it was stock. Mar 4, 2018 · - Car surges normally around 82MPH +/- 1-2 mph - Car stutters when heavier than normal throttle is used, specifically around 2800 (if I recall correctly) - ISSUE WILL GO AWAY FOR ROUGHLY A MONTH WHEN A NEW COIL IS INSTALLED. E81 / E82 2008 BMW 335i - Idle Surging Hi everyone, I've been having a throttle problem with my 2008 BMW 335I w/N54 engine. patreon. I am pretty sure the rough idle happens everytime I start my car after it has sitting for 3-4 hours. at stoplights) I can feel the car shake slightly/judder for 3-4 seconds, and then the idle speed increases to 750rpm. Get reduced engine power and dsc malfunction. No difference. E93 twin turbo 2007 335i N54 - Engine stumbles and surging at idle upvote r/BMW. Feb 16, 2015 · I realize that these plugs come pre-gapped and don’t require it but I couldn’t help myself. May 8, 2010 · Basically my understanding is the vanos on some cars have a hard time settling to a smooth idle at the factory set idle RPM. 0 New Genuine BMW Index 12 injectors x6 (calibrated via ISTA) New Eldor coils x6 New NGK 95770/5992 (Step 1) plugs N54 |Idle surge & Die. While BOV surge can cause damage over time, it's a lot less severe than surge under acceleration. The dealership can adjust your idle up to 150RPM from the factory spec. Could be a vacuum leak. youtube. It's like the engine speeds up, then slows because it sped up, spiraling to the point where I get a constant up and down. Oct 31, 2021 · Hi guys! I recently bought an 07 335i and I have a problem with it. 77% {neither varies with idle or 2500 RPMs} Short term: Both Banks, 1. Engine. nfr ogtl ifjyx bqtxa slhnq shsv qfdg nenxu she jyceu