Sierra :: 2000 - Rough Idle When Start During Cold Weather
Dec 3, 2010
2000 Sierra 1500, 5.3L engine. When he starts it in the cold (below 40 degrees) at first hits 1000rpm, then immediately drops to 400-500rpm. The idle is rough and wants to die if he tries to drive it. However after 10-15 minutes and the eng warms up, its fine no problems at all. There is no codes, so the scanner we had didn't tell us anything. He had cleaned the TB and intake system with cleaner, no dice. He also disconnected the IAC while it was idling rough, that didn't change the way it ran at all. We would like to toubleshoot it more before we start throwing parts at it.
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A friend of mine has had this 2000 Sierra since new. It has just over 100K and never had any cooling issues before. Last week when it was about 10 below zero she drove it home and it overheated and pumped a couple quarts of antifreeze overboard.
She refilled it the next day and it was fine but got it looked at by a local independent mechanic. I had told her that it was likely a sticky thermostat and it ought to be changed out anyways due to its age. The mechanic thought I was wrong and that she had driven it off to quickly in the super cold weather.
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My idle seems to always be somewhat rough whenever I put the heat on in cold weather. While in drive I'll come to a red light, heat will be on and I'll stop. The. my idle will bounce down then back up. I shut heat off to test and it only does it while heats on.
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Have a 2001 F150 FX4x4 and since the weather changed and started having days below 40 the truck has started running rough for about the first 15-20 miles. When you first start it starts like normal for first 3-5 min and then it starts loping real bad like it has a cam in it!
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When it's cold outside my car will start up, but not stay running. The only way I can get it to stay running is to keep my food on the gas for up to five minutes. Once the vehicle is warmed up, it stays running. If I start it every hour or so, it will run fine. It's just when it's been sitting out in around zero degree weather overnight for example.
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Truck is an extended cab, 8' box, 4x4
This truck has begun to not start in cold weather. No click of the solenoid, no starter movement. Dash lights all work, heater, wipers, etc. I put a space heater in the cab, on the drivers side floor board, warmed it up and then it would start.
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Title pretty much says it. When its COLD it surges while idling upon start up. It goes away once you start driving it and the engine warms up. Other than that it runs great. Its got about 235 K with a replacement motor that has about 100k. I've had it about a year. Great vehicle. Its a standard.
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I am writing this about my fiances 2000 Oldsmobile Alero 3.4 liter. I live in MN so we see our fair share of cold weather. After her car has sat over night it will not start in the morning when the temp is below 32F or so. It started happening at the end of last winter and then it got warmer out and the car became normal...which is hard to figure out the issue when you cant verify the problem when you want to. Anyways we just had one of our first pretty cold nights and we went out to start her car and it barely started.
I have suspected it to be a fuel issue because while trying to start it if I hold the gas pedal in it will start to backfire lately and just acts like it is flooded. This last summer I looked over some things and found that the Fuel Pressure Regulator was leaking into the vacuum line which would go into the intake manifold and flood the car. So I replaced that convinced that it would solve the issue. It didn't. I also found that the PCV valve was stuck so I replaced that. Last winter I dumped in a bottle of gasoline de-icer or whatever that stuff is called thinking maybe she got some bad gas and her lines were freezing. That didnt change anything.
When the car wont start I can literally crank until the battery is dead (newer battery in the car) with no luck. I have had to be jumping it and cranking it over for a good hour to get it to start. Not cranking straight time obviously. But about an hour worth of time before it starts. And at that time i am thinking it starts just because of the air temp going up in that amount of time or something... I don't know. I am not quite ready to bring the car into the shop because I know it will need to stay there for a few days to be able to get the right conditions for them to verify the problem. My fiance and me have very busy schedules between both working full time and going to school full time. So to be without a car for a few times isn't an option.
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So my wife drove her car all day yesterday, everything fine. This morning went to start and it wouldn't. It turns over fine just not firing.
Now during the summer I had replace the fuel pump/filter before discovering that was not the issue.
I know you are already thinking CPS!.. I replaced that over the summer.
I have not checked the spark yet, kinda hard to do that one by yourself.
Beyond spark I am not sure what else could be wrong, especially because it was running fine last night. Is it common for accents to have issues in 20 degree weather?
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We have been having issues with my son's 97 Sierra running rough when it is cold/damp. It feels like the engine is missing.
Today, which is warm and dry, it started running really bad and it was all he could do to limp it home. It seemed like it wanted to idle fine but when he tried to rev it up the tach would start jumping and it seemed like it was missing.
Could this be a bad cap/rotor? The engine has 200,000 miles and we've never changed the cap/rotor. I changed the plugs/wires probably 100,000 miles ago.
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I have a 99 silverado with the 4.8 w/186k on the clock. I am having an issue with rough idle and hesitation on cold start up. Once the truck warms up the idle and hesitation go away. I have replaced the PCV valve hoping this fixed it, but it did not. I have also cleaned the TB and the MAF.
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I have a 99 lesabre cold start rough idle but smooths out . Warm no start. Trouble codes P0171, P0300, P0336. Had plennum replaced 2 years ago but I'm seeing coolant around the base of the plennum so I'm going to have to do that again but I don't think that has anything to do with the warm no start.
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My 2007 TrailBlazer with 84K stumbles for 25 seconds when I start up cold. After 25 seconds I hear a click and then it runs perfect. No engine codes present. Have new plugs, new O2 sensor, new thermostat.
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I got the fuel pump and fuel pump control module replaced. Now I am still getting a cold start delay (5-10 seconds to start) and it has a rough idle sounding like its misfiring. This happened when i picked it up at the dealership after a new fuel pump BUT! keep in mind it has been doing this for a while so i figured it was the fuel pump.
New oem plugs and the coils were replaced when i bought the car because the coils failed during a test drive I need to scan the codes but i will post. Also this only happens during a cold start. if the car is warm and i go into target or something then start it shortly after its fine.
TSB'S I think will fix this. [URL] .....
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I have a 2003 Camry 4 cylinder. The problem we are having is the car has a slight rough idle only at cold start. After she warms up she is smooth as glass. What would cause this?
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I have a 2003 Camry 4cylinder. On first start of the day the engine shakes a little untill it warms up and is driven for about 2 blocks. After that it is smooth. I cleaned what I could of the throttle body on the car, changed spark plugs and PCV. All that worked but cold start shake still there.
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I'm having this cold start issue with my 2001 SF, but it doesn't seem to be fuel related like as the car starts fine but after about literally 1-2seconds the RPMs drop below 1k and the car will stall if I don't put my foot on the accelerator and keep it around 1000-2000 RPMs. But if I happen to make the revs go too high and let them drop again it seems like it wants to stall even easier. After about 30 seconds it smoothens out and drives almost perfectly except for a slight lack of power than normal going uphill (A.T drops to 2nd gear, sometimes 1st depending on the incline). We have had the coolant temp sensor and the fuel pressure sensor replaced. Could it be the MAF? We did clean it one time but it didn't seem to work much at all. Recently out of curiosity, I disconnected the MAF sensor and started the car it being started for a few days. No issue with idling whatsoever!.. ??
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1996 GMC Sierra SL V6. Owned since new. 100,000 miles, never tuned up. I decided to get a tune up in hopes of increasing mpg, and it was overdue really. New plugs, wires, cap, rotor. Got truck back and it runs rough, knocking, skipping, hesitating, bogging down when trying to accelerate, rough idle. Went from 15.5 mpg, down to about 14 mpg. They said they put in all AC Delco parts. Brought it back to them twice now and they cannot figure out the problem. It ran PERFECTLY before I send it in for a tune up. No problems whatsoever.
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2008 VR6 Touareg with 71,000 miles. When he starts it cold the idle jumps around and is very rough. After 30 seconds or so it calms down, but you can tell it's still just not right. It also makes this puffing sound especially around the exhaust. At least puffing is how I'd describe it, maybe I can take a video of it at some point. No visible issues anywhere in the engine bay or anything that looks out of place. I ran an auto scan with VAG-COM and I pulled absolutely no faults. I found that puzzling.
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My 07 F-150 5.4 has a rough idle during a cold start for about 1 minute. It happens mostly when the weather is chilly or cold. Also after the first start it doesn't do it the rest of the day. Of coarse they can't find anything wrong and tell me there are no updates for anything like that.
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I have been debating if i should use seafoam engine treatment. My truck has been having issues with the first cold start of the day. I've noticed the rough idle that accompanies the cold start. I live in Denver so this truck sees alot of stop n go traffic. Will seafoam do anything about the dirty fuel injectors. They have to be replaced here soon but will adding seafoam solution buy me more time. If so, what are the steps on how to add. The can isn't very detailed on instructions and Internet isn't being useful. I have an 04 F250 Lariat Power Stroke 6.0L diesel
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