Low Idle On Startup

Kent, On the rather rare cold morning here in Texas my 1983 300SD will start without any problem. As soon as i step on the throttle and drive a block my idle drops to 550-600rpm. Starting issue. Intermittent definition, stopping or ceasing for a time; alternately ceasing and beginning again: an intermittent pain. The precise information you …. Now the car will start cold, idle a little low(500-600) but smooth and sounds fine when revved up. Also, for a bike with EFI, there is a low oil pressure warning light that warns you on low oil pressure. Do Stop-Start Systems Really Save Fuel? It's also best if the car is generally quiet and has low idle vibration. 7,500 miles. So at the first line is around 500 RPMS, which I always seen as low to begin with, but it is the norm on these engines. I've been having an issue for the last couple months, and it seems to be getting worse. 7 stalls at low idle! i changed the egr valve and still stalling! need help - Answered by a verified Dodge Mechanic We use cookies to give you the best possible experience on our website. Sensors named after their readings, regardless of the implementation, are said to be high-level. Ask Question Asked 3 years, 9 months ago. change CO values or pull the idle control valve and blow it out or try a new air box temp sender Any input would be very helpful. The most common cause of rough idle quality in engines equipped with this carburetor is an unevenly adjusted idle mixture circuit caused by incorrectly adjusted mixture screws. With BAS, eAssist and similar Idle Stop-Start systems, the alternator/starter can also provide extra torque when the vehicle is accelerating. P0500, P0507, etc. Lately the idle has been low in drive around 600rpm probably. When parked idle will bounce from 500-1000 then eventually stall - leaving a strong gas or sulpher like smell. I stopped by an auto parts store and had them hook up the code reader and they said it wasnt returning any codes. I have had ongoing misfire problems for the past 6 months. 07 apex rpm's very low and stalls when warm on idle. The choke butterfly should be fully open, as the engine is warm. How Connected Standby Works (or Why Your Windows 8 PC’s Battery Drains So Fast) Chris Hoffman @chrisbhoffman Updated May 28, 2014, 8:47am EDT “Connected Standby” is a new feature in Windows 8. I let my 2010 Acadia with 94K miles get to about 1/8 a tank of gas. Just looking for any more info before I spend more than the car is worth in repairs. Its not a huge deal, just an annoyance, you start it the first time when cold and high altitude it runs rough for a second and stalls, then you start it again and it stays running. Fired up but then idled to around 1100-1200rpm kinda stumbling lower even maybe to 1000 rpm. Since I've replaced the water pump and the t stat, my engine runs a little bit hotter than before with no overheating issues, but the AC performance dropped and it only blows cold air when i rev it up. Thanks for your advise. Never thought it could be the MAF as the car drives fine except for the cold start problems. the motor has forged ross pistons in it. Idle improved as car warmed up. SYMPTOM SUMMARY The engine idles too high. Scott, besides the 1128 and 1130 codes, I beginning to have a idle problem on start-up. or just die out. From day one the idle goes from 500 to 2000 for 5-10 seconds on a cold start then settles at 1500 until you touch accelerator. I have a 2000 4. A high idle in your car can cause you to worry. Sep 30, 2014 | 2005 Toyota Tacoma. How Connected Standby Works (or Why Your Windows 8 PC’s Battery Drains So Fast) Chris Hoffman @chrisbhoffman Updated May 28, 2014, 8:47am EDT “Connected Standby” is a new feature in Windows 8. No codes or errors shown!. I'll hit the gas when driving and it will hesitate when. The vibration gets worse in drive and reverse but it is still present in park and neutral. When the engine is above 150 degrees I get high rpm right when it starts, then ramps down to 900 rpm like its supposed to do. Another reason for stalling may be transmission bands sticking, which does not allow the transmission to come out of gear on idle. 1 cold start idle problem I think I used a 1. Automotive Forums. Even if the engine is warm, the car still fells like it is going to stall. I would appreciate help with the following questions; is the idle speed of 600rpm when warm correct? (seems a little low to me) if this idle speed is too low, can someone recommend where I should start looking for the cause. Gonna have to try a mate's MAF to confirm and then see if it can be fixed with a simple clean or need replacement. Cold start is difficult. Turning the screw counter- clockwise will pull it outwards which delivers a richer air- fuel mix to the engine, resulting in lower rpm. Car always starts, but from a cold start, after a few miles, if I stop, idle was very rough, I sometimes had to step on the gas to keep the engine running and the exhaust smelled REAL BAD. 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. The ECM noticed a low fuel rail pressure on start up. The main cause of nozzle drip, when not related to float level being to high, is to much air moving through the venturi. The misfire will always go away one I give the car gas and start to raise the RPM's so this makes me thing it is not. If engine hestitates in the transition, fine tune mixture so that the transition is snappy and idle is reliable. 4) Adjust to recommended RPM. 0 D4D TR, 46000 miles. Gonna have to try a mate's MAF to confirm and then see if it can be fixed with a simple clean or need replacement. 2002 GMC sierra. Instead th. Stopped and restarted and startup/idle was rougher and check engine light came on. If air is introduced to the engine that is not regulated by the PCM, it may result in a rough engine idle at cold start and a code P050D being stored. Thread starter the last code was a 10. White smoke, gas smell, bad idle, loss of power in low RPMs??? there you might have a blown head gasket or worse if that all checks out the just start cleaning. ” I’m always happy to sell engines, but I prefer to help folks like this out with knowledge. Once the engine gets to operating temp and I shut off the car for a few minutes or an hour or so, the car starts and immediately goes into a very low idle, I'd guess about 200. At the start of the week my Yaris started misfiring slightly, was only really noticeable when I put my foot down and the engine would jump slightly when accelerating, engine warning light came on also. Did a search and didn't find much relating to this specific problem. The system consists of an oil level sensor inside the crankcase. A day maybe two after changing the plugs, I started noticing the low rough idle. 4) Fast idle RPM set too slow. If all other components of the fuel system are working properly and there is still a problem with the idle speed, the screw may be adjusted. Rough start - cranks several times and fires everytime, but I have to bump the throttle to make it stop coughing immediately after starting up. it runs fine when i first start it, but soon idles low/rough, but only in gear. 5)Low fuel delivery. Adjusting the idle air screw doesn't seem to have. A lean hung start is associated with low fuel flow and proportionally low EGT. It idles fine until I give it some gas then it hunts> for the normal idle. 2002 GMC sierra. Now it has a serious starting problems. After troubleshooting, I discovered the problem is related to low fuel pressure. turned up the idle screw in the base plate of the TBI, which does not seem to help, it just goes back to low idle and stalling again, is the a way to get that back to the original factory setting? I am presuming that screws up the main computer. I wouldn't be to worried about it, especially if it idles okay. After beginning the trip the engine runs fine. Hihihi! I am currently rolling in a 96' Pontiac Firefly and occasionally have a low-idle starting issue. It will do this for half a min or so before it sorts itself out and goes back to idling around 900 RPM again. Idle Surge) For those of you who may have missed the thread regarding my idle surge, here's a brief summary: - One hot Saturday in June, I was driving happily along the freeway. It tried to start when crank, but won't run. Once it heats up the idle is around 350 and rough, and it will die instantly when trying to start. Low Oil Pressure alert going off. , a cruise ship with a cluster of coronavirus cases that forced it to idle off the California coast for days arrived at the port of Oakland as officials prepared to start bringing. When I start my car it will run very rough. The only reason I jumped to IP is because a buddy of mine once told me about getting an extra thousand miles out of his by just setting the idle higher and higher and that sounded like what I was going to have to do. Crankcase pressure is within spec (about 1 in hg). 2013 GMC Rough idle at Startup when 40 Degreesor less. My cold starts also seemed quite long (engined turned over 10-12 times before firing - warm starts were fine) and the car usually bucked once or twice driving away. ) The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Difficulty Scale: 4 of 10. For the purpose of this specification we distinguish between high-level and low-level sensor types. 6v Ford Focus hatchback 5door but it had a low idle issue wich i have mostly resolved by remove the idle control valve & the Gas valve housing or whatever you call it and cl. start fast, move at your speed and stow away nice and neatly when done. It normally drops down to 500 for a second or two, then jumps back up to 700-800. Could this be a IAC problem. rough idle everytime i start my truck, but goes away after a Post by ANDREW 02 F-150 » Sat Oct 11, 2008 8:42 pm EVERYTIME I START MY 2002 F150 SUPER CREW W/ 5. It delivers 9 000 running Watt (12 000 surge/starting) and features a large 7 Gal. Well its been two weeks and is doing all same stuff all over again. Very Low Idle on 2012 Outback I've got a 6MT base model 2012 Outback 2. This is because: If you have a misfire, one of your cylin. The King Air and 99 had the high and low idle position but the Twin Otter did not so we went to idle Ng+15% before turning on the generator. By then, the battery charge is low enough that the solenoid just buzzes again, and I have to recharge the battery. Just got a Jetta again - 2010 Limited Edition just shy of 100K miles and I've got one problem with it. The issue is that when i start the car it will idle then it will start to search for its idle. Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake. You have to hold the pedal down a bit to get it to start. sometimes starts with low idle sometimes starts correctly. I replaced the cold start sensor and it did not improve the cold start idle. Went to dealer for usual maintainance and they said the oil was low. This creates a ‘choppy’ power delivery that may be most noticeable at idle. The plugs are one-year-old and the fuel filter has been changed along with the fuel line. Maybe give her a good induction cleaning. Description GEN-13000-1MSE. I pulled the TB (drive by wire) off and cleaned it really well and it bumped up to about 600-700 for a while but now it's back to 500. 9 years ago. 947 (Polaris Spec is. Now the car was running pretty good in general, but the cold start/idle issue was buggin me because I figured it should be better than it was. Before it used to Rev high and gradually go down as it. and low forward speed "after" the engine warms upat higher idle or other speeds it runs just fine. I have even swapped the IACV with a known working one. Suddenly my rpms drew way down. Shut it down and start it up again and the idle returns to normal. Set your entire high octane and low octane tables to desired spark value. 9l gas engine, it's pretty easy to change and was fairly inexpensive. I get a low idle (500-700 RPM) and stalling on cold start unless I give it constant gas. When I first fired it back up after all the above it was idling low @200-300. If I don't give it gas it will die. by Kyle McFadden. 5) Correct delivery to carb. If all other components of the fuel system are working properly and there is still a problem with the idle speed, the screw may be adjusted. 2001 low idle problem. Now the car will start cold, idle a little low(500-600) but smooth and sounds fine when revved up. I have replaced my idle air control valve , my cylinder head temp sensor , my intake air sensor , gone through all vacuum hoses and Pcv lines. 50 small steps you can take. As low as $4. After a few weeks of this problem, the idle started to be low when stopped in. So the past couple months I've noticed my truck has a really rough idle in the mornings when it is cold out, to the point where it has even died before. Starts and idles (1200-900rpm)low and quits eventually. Automotive Forums. When I start my engine when it's cold it runs extremely rough. During the rough idle I see some white smoke. For example, if I start, put it in H, and tap the gas, it will stall after low RPM. I will use the foot pedal to maintain ~1500 rpm for a minute or so until the engine maintains idle on it's own. app1 runs on the low-order two processors of the node. 1 cold start idle problem I think I used a 1. 7) Float level set very low. Went to dealer for usual maintainance and they said the oil was low. When i start my car, the car idles way too high, at around 2000 rpms, and then it lowers to about 600 rpms. Turning off the idle adaptives makes the normal spark tables get referenced for idle. Hey whats up guys, i've been having a problem with a rough idle its been going on for a while and i just cant seem to get it properly diagnosed. I have a 2002 Tundra 3. does anyone know what could be causing this or where to start looking besides just taking it to a chevy tech and letting them run tests on it. These settings are especially important for GigE links. Been having an issue when I start the truck cold it will idle really low almost like it want's to stall. 0 vvti? Also gear lever felt a bit sticky this morning. I'd say within 2 minutes the RPMs will come up to 700 or so and idle fine. Ive been having some problems with my 95 gst. Observe the pump jet in the carburetor, and with your hand, work the carburetor throttle to the wide-open position. 3 with 77k on it. Using the cold idle switch helps too. Low battery voltage. It will do this for half a min or so before it sorts itself out and goes back to idling around 900 RPM again. ) varies widely. That night my truck did not start, I had to have it jumped. A low battery, or an unusually low (or high) charging voltage may set a code, but a weak battery, poor ground or bad starter probably won't. The idle has always been very low @ 500 rpm. I have had a problem with my 2000 montero sport. My 2006 dodge 1500 5. Information currently shown may not be valid for all stores. If itʼs easy that youʼre after, trust Toro. At idle, your engine is turning relatively slowly, let’s say 1000 rpms. The idle is so low at times that the batter light will flicker for a second. Just looking for any more info before I spend more than the car is worth in repairs. 2009 enclave 131k. Glow plugs were replaced in September and the valves were adjusted a few months ago. I believe that for PT-6 engines, it is a good idea to have high idle for turning on the generators after start. When that happens the engine shakes the enitre truck, like litterly, the whole truck. Ever since I bought it I have had an issue with a low idle and on startup it will rev high about 2500 rpm and then idle down and act like it is going to stall sometimes did sometimes didnt, Ive replaced the belt, alternator, IAC twice, TPS, and did a fuel system. " Engine start was simple with the starter engaged on the overhead panel and condition lever moved to the low idle position as NG (high-pressure core rpm) passed 10%. You should allow the engine to warm up for a few minutes and the computer will re-learn how much air to allow into the engine at idle. A little background: 2005 2. The first step I take to solve a rough idle issue is to start with a good tune up. After starting, it often idles very low and sputters but then corrects to stay running. This is because: If you have a misfire, one of your cylin. Ford has issued a service bulletin #10-21-6 to address a problem a low idle or fluctuating idle on the vehicles listed below. However in the past week it has gotten markedly worse. If the fuel tank just got filled and it fails to start it is the fuel purge valve. My cold starts also seemed quite long (engined turned over 10-12 times before firing - warm starts were fine) and the car usually bucked once or twice driving away. I'm having a low idle condition about once a week at start up. It also doesn't do it with warm starts. I have the 19' Ram 1500 quad cab 5. Hi! I have a 2000 Toyota Camry. You have to hold the pedal down a bit to get it to start. Good plan and I also agree with Hoot on the base timing procedure. Any thoughts Thanks. sled ran great all day. Idle definition, not working or active; unemployed; doing nothing: idle workers. After replacement of several parts (coil, CDI, carb, etc) I finally got it running but it would not idle and was almost impossible to start. The most common cause of rough idle quality in engines equipped with this carburetor is an unevenly adjusted idle mixture circuit caused by incorrectly adjusted mixture screws. Sometimes after I rev the engine a few times the car will suddenly idle normaly and run just fine. Whe the car is warmed up it runs fine - no hesitation or rough idle - just when it has been sitting a while or. This year I installed a new CTS sensor, which I thought would solve the issue, it did not. This valve acts as a controlled vacuum leak; when the computer determines that the idle needs to be higher, it opens the valve and allows more air to pass. Crankcase pressure is within spec (about 1 in hg). Sometimes it recovers from the low RPM but other times it just dies. I recently bought a 2008 Silverado 5. Ever since I bought it I have had an issue with a low idle and on startup it will rev high about 2500 rpm and then idle down and act like it is going to stall sometimes did sometimes didnt, Ive replaced the belt, alternator, IAC twice, TPS, and did a fuel system. I've an 07 Volvo 780 with Cummins ISX 500 and 500k miles, still on original turbo and egr. GM > Engine > Idle > Idle RPM. I have a 02' 3. The engine runs good, but when you first start it, when the engine is cold, the idle is very low, maybe 400 RPM. Take charge of your lawn with the best lawn mowers trusted by homeowners and professional lawn contractors alike. 5L in it, and it will intermittently start into a very low idle almost as if it's going to die until I give it a little gas. If itʼs easy that youʼre after, trust Toro. Categories: American Classic Cars | Muscle & Pony Cars Cars need maintenance, there's no question about that. When traveling at low speeds, 40mph and/or if the RPMs are below 1800, the RPM gauge jumps and I can feel the surging. Rough start - cranks several times and fires everytime, but I have to bump the throttle to make it stop coughing immediately after starting up. ) The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Difficulty Scale: 4 of 10. ” I’m always happy to sell engines, but I prefer to help folks like this out with knowledge. My 2006 dodge 1500 5. This is HP’s official website that will help automatically detect and download the correct drivers free of cost for your HP Computing and Printing products for Windows and Mac operating system. No admins or aftermarket parts. A diagnosis of a low idle issue is achieved by checking various parts of the engine. It wills start right back up. If I press the gas and blip the rpms after turning the car then it will idle perfectly at 700 rpms. At low rpms though, it is enough to make the mixture too rich to fire. So if you have a rough idle with your 4 cylinder Honda, this might be a contributing factor to your rough idle. The oxygen sensor will detect the extra oxygen that is entering the engine through the vacuum leak and will signal. So a month or 2 passed and the rough/low cold start idling issue resolved but I'm still left with a noticeable high idle at 1000-1250 when warm. Turn key off and it starts right back up. Start engine 'cold' start with headlight loads and heater fan running for the loads. The two lines of text contain information about the Python host and provide suggestions on the commands you can try. On first startup, mainly cold starting the idle fluctuates from high to low and sometimes stalling. If your engine has a big cam and must idle at a higher speed, that’s OK. Ive been having some problems with my 95 gst. Jim, grab a can or two (or big can) of TB cleaner and get yourself an old toothbrush and other bristly pieces to get in the tight areas. I noticed that when I start it at a cold start it's idle is low. 2001 low idle problem. Got the rest of the car pretty good. Intermittent definition, stopping or ceasing for a time; alternately ceasing and beginning again: an intermittent pain. Learn about this problem, why it occurs, and how to fix it. This creates a 'choppy' power delivery that may be most noticeable at idle. If I rev it up and let off too quickly it dies. It seems kinda low in park too around 750rpm. The CIS-E engine control unit ("brain") or ECU, adjusts the idle with a device called an idle stabilizer valve according to engine temperature, speed and mixture. A high idle in your car can cause you to worry. Idles rough at 700 rpms. If air is introduced to the engine that is not regulated by the PCM, it may result in a rough engine idle at cold start and a code P050D being stored. Now it doesn't run at all. With the foregoing very limited data, can you comment on what you you think my problem is? Some say I should clean the throttle body. 5 psi delphi injectors had a 100 wetshot, but that's been removed The problem is basically that on cold start the engine starts up fine and then the rpm drops until it dies (sometimes it recovers and is able to idle). I do not use the the AC at all in this car. My cold starts also seemed quite long (engined turned over 10-12 times before firing - warm starts were fine) and the car usually bucked once or twice driving away. The idle is set low to pass emmisions at idle. It runs fine once its up and going but there is a rough idle when it starts up and when its sitting still. 2006 Impreza 2. It will idle at or below 500 RPM for a couple minutes, then recover and idle at the normal 750 RPM thereafter. Finally, that got to be old and I bought a new one. Starting issue. the motor has forged ross pistons in it. I let it be for a minute or two. The pictures within this how-to are my contribution to aid in explaining. There should be a spring on the side of the carb that sets the fast idle and choke when cold. I have the 19' Ram 1500 quad cab 5. if I hit the gas hard and it should be revving to 3000+RPM, I only get 1500-2000RPM. From a cold start, usually in the morning, the 1st 10-15 seconds run rough before settling down to idle. 4+ for high-bandwidth applications. I've been having an issue for the last couple months, and it seems to be getting worse. Recently my car is occasionally having problem start after an auto-idle stop. If a wetstart is detected, the EEC turns off the ignition and shuts off fuel to the engine 15 secondsafter the start lever is moved to IDLE. It is probably the idle system that is failing. I've been doing with the rest of the tune, and it's starting to run pretty good through all the varied situations, yet have not been able to eliminate this problem as yet. I'm just looking to get my high idle back which is hilarious because most people on here are trying to get rid of their ridiculously high cold start idle!. It threw a "low coolant temp" code or something. Car idles too high at start up and idles low after? I have a 96 Mazda Mx-3 1. So just recently my truck decided that it wanted to act up. Rough idle at start up then smoothes out after 30 seconds [200][1990] posted by machine man on Thu Mar 17 19:57 CST 2011 > V Users marked in green are currently online. And when it comes to older cars and classics, well in many cases, they need even more maintenance, having at some point suffered from the ravages of neglect. The car exhaust port is important as it neutralizes many of the harmful fumes that come out of the engine. 92 s10-high idle and low idle Sign In i have a 1992 chevy s10 \2. I've been trying to tune it out with the IAC controls and waving the Help wand over everything. Gonna have to try a mate's MAF to confirm and then see if it can be fixed with a simple clean or need replacement. This sets the check engine light, which I had read at Autozone and they said P1009 and recommended looking around on the internet because, they didn't have much info on what a P1009 failure is. The engine always rolls over fine, but sometimes I have to give it a little gas to get it to fully fire and start. Now the car will start cold, idle a little low(500-600) but smooth and sounds fine when revved up. See what others are asking about their. Sometimes it recovers from the low RPM but other times it just dies. , a cruise ship with a cluster of coronavirus cases that forced it to idle off the California coast for days arrived at the port of Oakland as officials prepared to start bringing. Since weather turned colder my ranger when it's 10 above or lower doesn't want to start properly and I end up having to flutter gas pedal almost at floor. Trinkets work instantly, with no need to log in, download plugins, or install software. but as soon as i start going and i slow down to a stop my car will idle at about 500-600 rpm. Could this be a IAC problem. till it warms up. When my idle started acting up I’d pull the device and lube it up the best I could with silicon spray and it would perform properly for several months and then I’d have to repeat the process. The improved fuel atomization eliminates flat spots when the carburetor transitions from idle to part throttle for better low rpm performance. Most of the time it comes with a code for a cylinder 1 misfire but not every time. I was having problems with my car having low idle. If your Honda seems to have a rough idle but there is no engine light on and mechanics are telling you to clean the throttle body, get new spark plugs, change your MAF sensor etc then forget it. The idle is set low to pass emmisions at idle. what will cause low oil pressure on startup and idle but will get around 40 when the engine warms up 05 5. Download the latest drivers, firmware, and software for your HP OfficeJet 4650 All-in-One Printer. Everytime I Start my truck up warm or cold out it starts up lugs down like its gonna die then idles as if it is already warm. HIGH IDLE OPERATION. Its not perfect & idle tuning is not always cut & dry but this has always been a very good starting point for idle tuning. God forbid that I turn on the air conditioning during this initial period as the idle drops significantly and the engine feels as though it may break right off the motor mounts. Rough idle at startup 10 Answers. Categories: American Classic Cars | Muscle & Pony Cars Cars need maintenance, there's no question about that. And also, another problem is that my Tach, usually on cold days, will stay. With the unstable idle, the low point in the idle may be low enough to bring the flow of oil down to the point the light does come on. Hot start it most of the time won't start unless I give it a little throttle. It seems to have plenty of power and does not smoke. So at the first line is around 500 RPMS, which I always seen as low to begin with, but it is the norm on these engines. Rough start - cranks several times and fires everytime, but I have to bump the throttle to make it stop coughing immediately after starting up. The issue is that when i start the car it will idle then it will start to search for its idle. 2 TB on a 1. i am having an issue with a real low idle around 475 or 500 rpm, i was told its suppose to be up around 650 rpm. Went to dealer for usual maintainance and they said the oil was low. My car had this problem as well and it has been driving me nuts for 6 months. you're going to be chasing your tail). I know there are numerous threads on this, but I can't seem to figure out what to do next. Using the cold idle switch helps too. A hung start is identified by light-off followed by abnormally slow acceleration and rpm stabilization below idle. may check the carb settings ,stock is 1 turn out on each screw on a 044 it should run and idle there ,then tweak after running 1/8 turn at a time till runs the best ,could also have some varnish build up in the idle circuit ,thats hard to get clean sometimes ,if compresion is good 150 or better id replace/repair the carb ,if runs good wide open that rules out fuel lines colapsing to me. So a month or 2 passed and the rough/low cold start idling issue resolved but I'm still left with a noticeable high idle at 1000-1250 when warm. As soon as i step on the throttle and drive a block my idle drops to 550-600rpm. Some 2013-2016 Escape vehicles equipped with 2. i have a 2005 Ford mondeo 2. We use cookies to give you the best possible experience on our website. Once I drive for about 20 min and get everything warmed up my oil pressure holds normal with no drop at all. 4 is slightly different than the 2. Treasury bonds edged up to 0. she drove it for a couple of days before i replaced it. 2008 Mini Cooper S cold start rough idle. Stopped and restarted and startup/idle was rougher and check engine light came on. 5L automatic. I get a rough idle at start up. (Note: The engine idle speed is controlled by the computer and is NOT adjustable. Also when ac kicks on it will idle down and stall.