I'll bet that oil pressure is much higher at a fairly moderate 3000 rpm. They say that cylinder one is misfiring but they don't know why. I feel like one of more cylinders aren't firing. I'm trying to get ideas as to what's going on with my 2010 GMC Terrain SLT i4. I turned it CCW one turn, to bring up the cold idle about 500rpm like you suggested, but I had the same problem. Car idling rough when hot, overheats in heavy traffic - Chevy Message Forum - Restoration and Repair Help. Took the truck in for first maintenance today. replaced head, replaced piston and con. I have taken the car to 3 different dealerships in the past to get it fixed and noone was able to figure out what was wrong. Also, the heat in the truck is not as hot as it used to be (once again, may or may not be related). When you first start in the morning, it will run at the elevated RPM, but when it starts to drop back down to the normal idle, it will start to run rough and the RPM can drop to about 300 RPM and then jump back up to 1000 RPM. Re: Cold weather rough idle Unread post by carriedi » Wed Nov 19, 2014 5:26 pm the first thing to do is leave your truck at a shop that can park it outside overnight and start it up in the morning with a scanner hooked up and see what the engine is doing (or what the computer sees the engine to be doing). On first start in the morning my idle is a little high (~1100 rpm for about 30 seconds) but then settles into a rock solid 900. My 2001 Impreza WRX seems to be having a rough cold idle, the revs battle up and down while sounding like it's dying/shaking/about to stall, has anyone else had this issue and know what I am able to do to fix it? Once the car has warmed up it's perfect, however this doesn't seem normal. Upon cold start up, it idles at 1600rpm for about 5 seconds before slowly coming down to a more reasonable idle of about 1000. the resistance can be perfectly fine and still the component is faulty. Once it has been warmed up thoroughly it will start and idle normally. Rough Idle could be caused by many things and is hard to diagnose. car goes like stink or will do 36 mpg. There is no fix according to the dealer. but it will idle VERY rough for 2-3 mins if it. Recently replaced coil, around 2 years ago. The IAC(idle air control) valve is how the computer sets the idle, it is located on the upper intake. My friend is lost on what to do next. Those of you experiencing the rough idle should have this looked at! I don't think this particular part of the intake tract was changed between pre-'05 and 2005. 2005 acura tl. It's not terrible, but still. At that point the engine will shake as if starving for fuel. I turned it CCW one turn, to bring up the cold idle about 500rpm like you suggested, but I had the same problem. Sometimes it all depends on system maintenance. 3l engine • fuel—no start, loss of power or rough idle—during extreme cold weather operation—fuel gelling—vehicles equipped with 7. Is the engine symptom Engine Runs Rough at Idle, Engine Runs Rough or Misfires, Engine Speed Surges at Low or High Idle, Engine Speed Surges under Load or in Operating Range?. The next day (Monday) they started the car and agreed it was now worse off than when we left the car with them. After 2 min holding the RPM at 1500-2000 it ran fine. I watched start up logs and it would literally smooth out as soon as the sensors would start reading. Remove the lid to the cold air intake box or air cleaner housing using a socket or unclasping the snaps. Car has 90k. These get dirty and computer can't set idle correctly, they can be removed and clean. Any clues on a fix or tsb for these issues ?. So far as the rough idle goes, (I cant say about the speedo) I'm going to hazard a guess you have a problem with the Idle Air Control Valve or some call it Idle Air Motor. My 2011 eguc, with stage one and vance and hines power ovals and 33,000 miles, just started idling rough when cold,and will die if I don't hit the throttle to keep it going. The rpms come up to about 1200 -1500 and I let it idle there for 2 minutes or so. How to Fix a Rough Idle. Causes of a rough idle. If you shop at Amazon. For whatever it might be worth, from reading through various threads, there seem to be a few things that have helped with the rough cold running problem at least in some cases, assuming you already have the TSB fix installed. when i try to start the car on a cold start i have to crank it for like 10 sec-15 nonstop before it will. Hannah Eliza Roscoe (ne Caldwell) - aged 69. Note this only happens when the car was cold, once warmed up not a hint of misfire while idling. P050D CHEVROLET Meaning During a cold start, the Engine Control Module commands dual-pulse mode during Open Loop operation to improve cold start emissions. Didnt cost anything to fix!. From what I've read the very rough idle on cold start or no start condition is usually the Eccentric Shaft Sensor, but start with seeing if there's codes and go from there. On some cold mornings, the car won't stay running at all without me giving it gas, and runs REALLY rough like it is only firing on two or three cylinders. 6 VR6 engines just super finicky or is there something wrong with mine? The car is a 2013 Passat with 42k miles currently. Rough Idle when Cold Oct 15 2011, 10:27pm I have a 99 sierra with a 6. Sometimes they start right up, but at other times I have to crank and crank and then they will start like nothing is wrong. I bought [a Mercury OptiMax 150-HP outboard motor] used and have had [problems with hard starting and rough idle] from day one. turbo solenoid. In that case, I fill up the tank and when I start the car and drive away, it will once in a while idle a hair rough for a second at the first stop light. to/2rf7qC6 JB4 Bluetooth Connect Kit: http://amzn. (Improved 30% w/ new plugs). A4 (B7 Platform) Discussion - hard to start when cold and rough idle - hi everyone my car seems to have a problem when it's close to freezing point,the engine can turns for a few seconds before starting,but when it's hotter outside say 10c it's fine. can pull #1 plug wire and. The other issue is that I get high idle when the car is hot, sometimes worse than others, but will idle from around 1100 rpm to 2000 rpm when you let off. Start out on the right side and loosen the hose clamp holding the brake fitting into the intake air boot. The idle valve spec looks fine to me. It will cause, off idle problems. ) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!. Check operation of your thermostat and temperature sending unit. The roughness is more pronounced as the outside temperature gets colder. start the car and drive it around. Cold start rough idle × Help us help you. It runs rough and idles very low and will even quit a few times. I had a similar problem in my explorer, hard to start in cold, wet, weather had rough idle then would die out. DOWNLOAD outboard or inboard marine repair manuals straight to your computer in seconds—fix your problems now. I can still tell when it starts to idle a little rough, but it works itself out now, and does not start to shake the whole cab and sound like it is going to stall. 2016 rough cold idle. Welcome to Reddit, They did the sensor rebuild kit repair. Then it will slowly drop rpms down to 750rpm(normal warm engine idle) as engine warms up. Before the fixing, I always drive away immediately after start. Does Your Shop Speak the Universal Language of Auto Repair? by Continental. 0L Rough Idle - Tried everything any more ideas? Safety Recall D-13 issued out on March 04 involves the replacement of the crankshaft sensor. Once it warms up runs great and does not do this in warm weather. It strikes me as an over fuel type surge, which would also explain the rough idle. I just had the code checked again and I got back fuel injector code. diaphram, bad PCV valve (Rough Idle). As the car warms up power is suppost to be shifted from the top post to the center and bottom posts which closes the valve. Symptom 1: On cold start, the engine surges to 1000RPM, drops to ~200RPM and almost stalls, surges to about 1200RPM, and then evens out. I noticed that on some cold starts my idle is steady at 1000 RPM and no clicking sound. The engine idles rough when cold for about 20 seconds then smooths out. Gets better with A/C or defroster on. So to clarify by "cold" start, I mean any time the engine has been sat long enough to cool down from operating temperature and sat for a few hours. I first noticed rough idle on cold start Last Thursday (temperature less than 30 degrees). If you open the throttle ever so slightly, it revs up and runs ok. Unfortunately however the TSB also indicates that the malfunction indicator lamp (aka check engine light) must be on with a handful of diagnostic trouble codes (DTC's) recorded. It eventually set off the check engine light with cylinder 1 misfire and random cylinder misfire. 2004, 142,000 miles, plugs and coils done at 135K, complete PCV replacement at 130K, oil changes on time, cleaned the MAF sensor when I serviced the car last. cold start injector, idle screw, CO screw, or thermo time switch. This is the enrichment cold start process. Happens winter or summer, seems to be worse in winter (temps around freezing, unheated garage but rarely below freezing in garage). Check your wiring for defects and test your temp. Mercedes 1985 380SL Runs Rough At Cold Start I checked the relay with the fuse on it. 2002 M3 99000 mi SYMPTOMS: when cold, have to crank engine for roughly 2-3 minutes, pausing between crank attempts so as not to burn out the starter motor, to get the engine to fireonce it fires, it runs extremely rough for another minute or two and often chokes outonce it warms up it runs and idles fine and smooth with slight lag between throttle push and rpm surgeno codes or SEL. Rough idle in drive: This too might be caused by vacuum leaks. I thought it was going to die. I can still tell when it starts to idle a little rough, but it works itself out now, and does not start to shake the whole cab and sound like it is going to stall. My cam/stroker truck normally has a rough cold start, especially in winter when it’s actually cold. Fuel System. 4 3v idles rough but clears when rev engine up When driving my 2004 f 150 and come to a stop sometimes it starts to idle low and skips. I can still tell when it starts to idle a little rough, but it works itself out now, and does not start to shake the whole cab and sound like it is going to stall. So I advanced the dizzy all the way an now it runs like a champ and no cold start rough idle issue. These may include a clogging air filter, vacuum leaks, air temperature sensor, throttle position sensor, idle air control solenoid, PCV valve, MAF sensor. Now the engine begins to die, because the engine idle memory is now gone. 08-30-2013, 04:45 AM. Rough Idle On Cold Start Symptoms 5 4 Triton Gradually people have to check the operation of selecting a new motor vehicle, at least an exciting new motor vehicle for you. Those of you experiencing the rough idle should have this looked at! I don't think this particular part of the intake tract was changed between pre-'05 and 2005. Recently replaced coil, around 2 years ago. when i rev engine it clears up to steady idle then it does it again after few miles. The entire car shakes. No codes showed up. Cold Start Idle Fix for the 1FZ-FE Thanks again to Norm of for the words and pictures. In the winter when it was cold the car had a rough idle for about 1 min. Found out it was fuel pressure loss that caused the long cranks after sitting and odd idling. Julia Anna Harrison (ne Heath) aged 46/47. If during cold start conditions the PCM sees a rough idle that cannot be stabilized within the parameters set by the manufacturer, then the error code P050D will be set and Check. When I got my Blackbear tune, Justin noticed it too. That is likely just the ECM taking control of camshaft phasing. Excessive idle speed fluctuations (1100-1300 rpm) on a cold start for the first 30 seconds of engine operation, when transmission is in P or N position. 8t AWP - Rough idle when cold - Low RPM hesitations/misfires - Overfueling I am having trouble piecing together my issue here and would greatly appreciate your input. Open the Glossary for acronym explanations. Current mileage 140,000. Bmw X5 2009 3. Also found this vid on YouTube and this is the same noise. If the EGR valve is stuck open, then you will have a rough idle (too much air into combustion chamber). P050D Meaning During a cold start, the Engine Control Module commands dual-pulse mode during Open Loop operation to improve cold start emissions. Those of you experiencing the rough idle should have this looked at! I don't think this particular part of the intake tract was changed between pre-'05 and 2005. Replied by icesouldy on topic 2005 Acura TSX rough cold idle? fitone wrote: Pretty sure that your car has a "drive by wire" throttle body. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues. It's a relatively easy fix. Drove for another month, 1000 miles or so, but today the same problem came back. Joined Oct 30, 2005 · 42. This one is a keeper. Doesn't do this when the engine is hot, only on the initial morning start up or during the day if the engine has sat a while. 0degrees/% the target idle speed is 850rpm when warm and fast idle is 1150rpm. Also for me shutting the car off when idling rough and restating doesn't fix it at all and so far this is always been the case. Drove around block and parked. Takes a good few cranks to cold start (When warm fine) Rough Idle ( I could not feel my other IS200 running but this one I can feel it shaking) TRC Flashing EML Flashes as it misfires Find it happens more when hot over cold happens when lifting off throttle no every time It happens more when holding a constant speed. Noticable in park, worse in drive when waiting at a light. Now even after it starts and is warmed up it idles rough. Cold start rough idle × Help us help you. The obd11 code is p 0404 but i dont see a egr valve so what could. In dual-pulse mode, the fuel injectors are energized twice during each injection event. Happens winter or summer, seems to be worse in winter (temps around freezing, unheated garage but rarely below freezing in garage). The car will splutter a little a few seconds after start and will idle a little rough, not too bad but certainly not as smooth as when warm. Let me use an idle complaint that had me on the ropes as an example. Over the past several months, upon cold start the car runs extremely rough as if it's about to stall for three to five seconds and then it idles, runs and drives perfectly thereafter for the remainder of the day. The SES light came on a few days ago and it was 0303 again. As of right now I have the fast idle screw adjust just right to where I can start the car cold but have to give it some throttle to start and it idles at about 1000rpm. 8L 4speed automatic sedan has developed the habit of cold starting perfectly well and then: 1) idling smoothly around 1200 RPM for 20 seconds, 2) then idling VERY ROUGH, around 1000 RPM as if on 3 cylinders, for 20 seconds more or less, 3) then idling smoothly again until warm up, and everything is fine after that. After the engine warms up idle speed will increase and the engine may smooth out (although acceleration may have some hesitation until the engine gets real hot. Rough idle with clicking sound. Let's go over each of these causes in more detail and learn how they can be remedied. When it started it would initially idle at 1100 RPM and then in about 2 - 3 minutes the idle would get rough, the tach would drop / surge from 200 RPM to 4000 RPM and eventually stall. a buddy of mine has an '05 6. Rough idle on cold start Hi guys, have had a little problem last few few months, with my SLK idling rough when the engine is cold. Remove the lid to the cold air intake box or air cleaner housing using a socket or unclasping the snaps. Hey everyone just purchased a 99 1. From Cold Start, car has trouble holding idle until warm. Anyone else experienced this or know of a fix?. Brought up the 5 second rough idle on cold start and harsh shift from 1st to 2nd, just in case there was a software update for it. Re: Rough Idle on initial start from cold The car last had a Ford service when it was two years old but was serviced by an independent in March this year as fords wanted to rip me off, but that's another story. Hard Start / Rough Idle in Cold Weather. cold start sputtering. Cause: Coolant getting into the cylinders. I have a 2007 Honda civic,as soon as the weather gets cold my car starts to run rough,the temp. After warm up I drove it 60 miles and it ran great. Hi, I am having a problem with my chevy 350 engine that I just installed back in August. Here’s what I have - ’94 ZJ with 5. Not only did the Fiat not cold start but on the second try the car would barely run seemingly only 2-3 plugs were firing. Causes of rough idling during cold starts. Moved car yesterday ice started really load knocking and missing worst than before any ideas?. Very pleased that it was a cheap fix, and now I can hold off on doing another major tune up until Xmas. When I start the truck cold, it will idle fine, can drive it, start, stop, and it will operate smoothly. Arnott Introduces New Premium Air Suspension Struts For 2016-2018 Tesla. Real EFI doesn't need this kind of jerry-rig crap to work. A downloadable repair manual is a digitally delivered book of instructions that provides step-by-step maintenance, troubleshooting and repair procedures. Re: 88 Chevy K3500 454 TBI. During idle warm up the engine shakes a bit, more than warm engine idling in red-light, but it's gone afterwards. When this is happening, it will run normal at any elevated RPM so you only notice it at a stop light when you are at idle. My coolant level is good (I thought is was low but after putting coolant in the overfill and driving, it is now above full). The idle of a car engine is kind of like a human heartbeat: You can tell what shape it's in just by listening. It starts out as a high rough idle and then after about a minute or two (dependent on how cold it is outside) it will drop to a low sputtering idle, almost as if it it wants to die out. Upon further investigation the Technician may find that P050D - Cold Start Rough Idle has been set. It will run rough until it warms up. If it fails it can tell The ECU engine is warmed up when really cold and cause hard starting and poor idle. Cold starts day after day are fine on my car. It started happening after about 200 hundred are so miles, subtle at first, and has gotten more noticeable over the weeks. This may be caused by sticking valves or excess carbon due to fuel contamination Note: fuel oxidation and volatility concerns can often cause these issues as well, however. Part of TPS sensor. 7L 4x4 5-speed, 217k miles. dieselmann's Tech Page Diagnosis by Symptom. 3 liter rough idle when cold * Simple fix* Jed Richey. The one issue I haven't seen mentioned is a rough idle when cold and surging. Typical 'sputtering' symptoms at idle, i. The only thing even close to this on my car is right after I get gasoline for the car. There are a number of sensors that may cause the engine hard to start when hot and may cause as well a rough idle. Engine misfire can also be a contributor to rough idle under cold start conditions. Idle settled @ around +/- 750 upon reaching operating temp. Started With Bad Cat So I Had It Fixed Rough Idle Still Present New Code. Idle improved as car warmed up. 1987 924s has decided to be difficult to start when cold and when it does start it will not idle or will idle very slow rough until it is warmed up. You have to depress the throttle to encourage it to start and stay running. Turn off the engine. Lately the car has been stalling when attempting to drive away when its cold out. and i also notice a huge power loss during that time period. After that time it would run perfect. Been trying to sort out some problems with my '02 Taurus (112k miles), which has developed a rough idle from a cold start. Not all the time. Anyhow, if is very cold, you might start getting some anti-gel and running it in each tank of fuel. but every time i try something different it seems to work for a little while ,,than out of no where,, rough idle,, that is also why i grabbed a new pcm for 10 bux from the boneyard,, but this was going to be my last resort attampt fix,,, but i really appreciate all the input,, but you're saying that it could be the iac acting up?. They say that cylinder one is misfiring but they don't know why. After two minutes everything is normal. If I unplug it and plug it back, everything looks fine. after it warms up it seems to run fine. For example, when an interval rotating spe. MrRob96fs U like them spinnin tires Established Member. i brought it to the dealer and they reprogram the ecu and the program fix If the cold start/rough idle only lasts for a few minutes (basically `til the engine warms up a bit), it`s nothing to get excited aboutmany of these cars have this "problem". have had same problem. 5L with 125,000 Kms and this winter was the first time I have had issues with rough idle after cold start. The first issue is cold starts in the morning. 10-15mph max. I can let it sit warming up for 10-15 mins even, and it will still be "sputter" idling. any ideas?? thank you 85. I think I went another full CCW turn and I still have a very rough start, maybe with two stalls before it actually idles. it should run smooth. DOWNLOAD Johnson Service Manual: Won't idle Will not Crank Over DOWNLOAD Johnson outboard marine repair manuals straight to your computer in seconds —fix your problems now. VW Golf Mk5 2005 TDI(BKD) rough idle/running when cold and cuts out If this is your first visit, be sure to check out the FAQ by clicking the link above. How to fix a rough Idle biker mike. It looks like the rough idle is worst when is in reverse or drive and I'm still when in park or neutral the rough idle is not that bad. I am reposting it not so much because I want to accumulate enough posts to become a Senior Member, but because rough cold idle, or just rough idle in general, seems to be a concern for many here. I have taken in to a shop where they fixed the problem, but it reappeared a week or so later. Engine idles rough especially at cold idle. cold start sputtering. rough idle—during extreme cold weather 01-4-4 operation—fuel gelling—vehicles equipped with 7. P050D CHEVROLET Meaning During a cold start, the Engine Control Module commands dual-pulse mode during Open Loop operation to improve cold start emissions. 4L 3v) I bought back in July of 2016. is it the temperature sensor (thermostat)? audi says it's normal. Happens winter or summer, seems to be worse in winter (temps around freezing, unheated garage but rarely below freezing in garage). Run the engine to see if the conditions are improved. The car will splutter a little a few seconds after start and will idle a little rough, not too bad but certainly not as smooth as when warm. When it started getting colder at night it seemed to be getting harder to start and running rough. User RCMUSTANG reported that his cold idle roughness improved after upgrading to Holley after-market ignition coils. White smoke and/or coolant odor may come from exhaust for an extended period of time at cold start as well. Then the other day it would not start. Also, make sure the gas cap is on nice and tight. Once the car is warmed up though it begins to idle and feel very rough. It was easy enough to find, probably just ahead of the throttle body in you vehicle, (double check in your repair manual). After getting the car back and letting it sit in garage I tried starting it up after 3 hours and have the rough idling back. Cap/rotor/plugs/wires were replaced in April so they only have about 10K on them if that. 5 Premium Rough Idle Cold Start. Here's where I would start - get the procedures for how to do these tests from the repair manual, from Haynes, or from the free online manual at autozone. A BMW E60 rough idle repair is an easy procedure that is usually caused by a bad DISA or idle control valve on the intake manifold of the car. Plugged in and parked for the night and put a battery charger on. I think I’ve run out of ideas so I plan to let it go and hopefully a service engine light with a code to diagnose will pop up some day. 4, it has 140K on the clock though. The IAC(idle air control) valve is how the computer sets the idle, it is located on the upper intake. My friend is lost on what to do next. Install the plugs just before cold start and see if the rough idle is still there, if not then that's probably the problem. It cranks for a very long time, but always starts with 1/4 throttle. 2005 S40 T5 Rough Stumbling Idle at Cold Start I have a 2005 S40 T5 with 86k miles. Have had several sensors replaced (even tho they checked good) and just had a tune up done on it. For whatever it might be worth, from reading through various threads, there seem to be a few things that have helped with the rough cold running problem at least in some cases, assuming you already have the TSB fix installed. Hard start/long crank--cold only No/hard start hot or after stall, restarts after cooling; Jerky, irratic idle; DTC's P1211, P1212, P1283. Cold starts day after day are fine on my car. Remove the lid to the cold air intake box or air cleaner housing using a socket or unclasping the snaps. As the car warms up power is suppost to be shifted from the top post to the center and bottom posts which closes the valve. Ok, on a cold start, it idles up to about 1500 for a second, then drops to 1000 and resumes. Rough Idle After Cold Start. I do get poor mileage 12 mpg in the city and 16-17 on the highway. It had the original spark plug leads and caps on it till today. Drove for another month, 1000 miles or so, but today the same problem came back. but it will idle VERY rough for 2-3 mins if it. Run the engine to see if the conditions are improved. Chrysler 200 Rough Idle Repair Symptoms Ignition Coil Replacement A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won't start I. Engine drivability strategy is much different under cold start conditions. i have a 2004 ford f250 powerstroke 6. Very rough idle when cold, sometimes cuts to installed to the fuel rail to see what we are reading on a cold start 2001 Ford Escape - Engine running rough on … Jan 11, 2011 · 2001 Ford Escape - Engine running rough on cold start "The Fix" 2001 Ford Escape Rough Running When Cold Runs Fine Ford Escape 2001 V6 Low Idle. When I start my engine cold, it idles just fine. Define rough? RPM's surging up & down, shaking? what happens when you gas it a few times & then let it sit a sec? Mine has a little surge on cold start up, I just let it idle for 2 minutes & then drive off. when you start it it will misfire and run rough as soon as the truck reaches. Beside the rough cold start there are two more things: I have a ScanGauge that once in a while loses the signal from the ECU. If it does gel, it will stall or run awful or just not start until you thaw out the fuel. My 2011 eguc, with stage one and vance and hines power ovals and 33,000 miles, just started idling rough when cold,and will die if I don't hit the throttle to keep it going. The problem we are having is the car has a slight rough idle only at cold start. 1987 924s has decided to be difficult to start when cold and when it does start it will not idle or will idle very slow rough until it is warmed up. Meaning it does not have a throttle cable and it is electrically operated. Also, the heat in the truck is not as hot as it used to be (once again, may or may not be related). But back in the cooler sprin weather, it started happening (around 20K miles). Since we have had a cool down in temperature, due to the hurricane (70° or so), on a cold start I get a really rough idle until the truck is warmed up. A BMW E60 rough idle repair is an easy procedure that is usually caused by a bad DISA or idle control valve on the intake manifold of the car. But just for those of you having idle problems on a cold start, check your timing first. Possible bad injector, leaking at the nozzle tip. It was easy enough to find, probably just ahead of the throttle body in you vehicle, (double check in your repair manual). You may have to register before you can post: click the register link above to proceed. ) the valve should move slightly. The fuel injector would cause a sometimes rough idle when it was on its way out. 10-15mph max. It will also about backfire 4-5 times until it begins to warm up During this it will throw CEL P0141 (Secondary 02 sensor) and occasionally P1139? (Front 02 Sensor). Then the other day it would not start. rough idle—during extreme cold weather 01-4-4 operation—fuel gelling—vehicles equipped with 7. As of right now I have the fast idle screw adjust just right to where I can start the car cold but have to give it some throttle to start and it idles at about 1000rpm. Model specific subject matter experts, classified ads and more. Rough Idle. Did you change either because it got worse or just because bad idle annoyed?. Now the only problem is engine idles rough for few second when first start in morning (cold start) after about 1 minute every thing is fine and no more rough idle or stalling. I had a Z3 with the same engine and the same cold start issue. If it does not start properly try the next step. Ok, So I put in the fuel filter and it helped, but did not fix the rough idle on start up. Weather has been warmer lately, so that may be why it has not been happening for the past couple of weeks. Unfortunately the parts won't be in til tomorrow so we went home MINI-less. It smooths out in less than a minute, but I have to rev it up and down several times to get the cylinders firing, if that makes any sense. I used friend of mine's tuner and increased the RPM by a little bit - and oh happy day it worked. Re: Rough Idle on initial start from cold The issues originally mentioned is to do with the VVT deployed on the 1. 3l engine • fuel—no start, loss of power or rough idle—during extreme cold weather operation—fuel gelling—vehicles equipped with 7. Tap it firmly on the pavement to remove excess dust. Details Behind the Cold Start Fix Since our story last week on the 2007-2009 Cooper S cold start issues we've had loads of emails asking some basic questions on the issue and the fix. Tried an old set of plug wires which definitely smoothed out the idle of the cold engine by @ least 70%. The plugs are one-year-old and the fuel filter has been changed along with the fuel line. If your car idles rough but drives smooth, then you have a spark plug. The normal idle is about 600 RPM. When started cold the engine should start without pushing down on the gas pedal. Beside the rough cold start there are two more things: I have a ScanGauge that once in a while loses the signal from the ECU. A bad injector will cause rough idle all the time. It gets better after about 30-45 seconds. Idle improved as car warmed up. Chevrolet Silverado 1500 Rough Idle Repair Symptoms Ignition Coil Replacement A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won’t start I. (Before the oil change, sometimes it could take a 2-3 seconds to start, now it starts in less than a second). The rough idle only stops after 5 mins driving when the engine warms up at which point car idles smoothly again. by Terry L. Mods on my A3 : 17 Leon FR wheels, usb in dashboard, extra 12V inputs in glowebox, TDI Powered emblem in armrest, Hybrid Turbo GT1749va based , 2. About a month ago I had some rough idle after a cold start followed by a CEL and misfire in cylinder #1 code. Excessive idle speed fluctuations (1100-1300 rpm) on a cold start for the first 30 seconds of engine operation, when transmission is in P or N position. Ok, on a cold start, it idles up to about 1500 for a second, then drops to 1000 and resumes. Not sure what causes it. First I want to thank all of you for the DIY's. Blue white smoke that burns your eyes, is un-burnt fuel, cold temperatures, high altitude and excessive idle time all mean cold combustion. A quick update. Chances are that if you fix the misfire; you'll also repair the rough idle at cold start. Rough idle, occasional cold start smoke, 987. It's a 91 Ls integra. Volkswagen Beetle Rough Idle Repair Symptoms Ignition Coil Replacement A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won't start I. if i do that for a while i can drive off but i can't stop or slow down or it will stall and shut off. I personally don't put much importance on a resistance check, as long as its not electrically open. My friend is lost on what to do next.