Questions about troubleshooting and solving rough idle problems

learn more… | top users | synonyms

4
votes
2answers
1k views

Ford Escape 2002 idling rough in cold weather

Last week my 2002 Ford Escape started idling rough when the temperature was in the 30-40°F (-1°C to 4°C) range. It also seemed to have trouble shifting or something at 40-45 mph. I'd describe it as a ...
6
votes
2answers
23k views

RPM fluctuation while idling

I have a 2003 Ford Explorer that hasn't been idling well lately. It normally idles around 800 or 900 rpms, but lately it will slow down to 400 or 500, then burst up to 1100 and repeat the process ...
4
votes
1answer
3k views

2003 Yukon XL 1500 5.3L Very rough, unstable idle on cold starts

When I say rough I mean like bad 70s carbureted motor rough. I've never seen an injected motor this rough during warm up. On the coldest days, it can even die out on me. The problem has only popped up ...
5
votes
2answers
10k views

2000 Ford Focus, low idle, stalling at lights, white smoke from exhaust - P0171 Code - problem?

I have a couple of issues which I hope are all related. The car is a petrol Ford Focus 2000 1.8. Seems to be listed as LX, but the engine is Zetec. When stationary, the idle is quite jumpy, and the ...
7
votes
3answers
17k views

2009 Toyota Camry 2AZFE idle vibration remains after new motor mounts

My wife's Camry went in to the shop 2 months ago for a rough idle. We bought the car used in February with 72K miles. We've put on 10K and decided to have a mechanic look it over and tell us what it ...
4
votes
1answer
2k views

'98 Camry has occasional rough running / low speed idle problem

My '98 Camry (with the four-cylinder engine) usually starts, idles and drives like a dream. About a year ago I had the entire exhaust system replaced (including cat) due to corrosion. Since then it's ...
1
vote
2answers
69 views

2001 Saturn L-200 replacing one tire

So, today I was driving and all of the sudden my front passenger tire blew out. I pull over to find out that I ran over some piece of metal and the tire is torn unrepairable. Luckily there was a tires ...
2
votes
1answer
5k views

Why is my car hesitating to accelerate only when I first start my car?

I've got a 1999 toyota corolla with over 170K miles, and I've had my fair share of problems over the years. Currently, I have this problem that my car seems to hesitate accelerating when I first ...
1
vote
1answer
1k views

BMW E30 uneven idle especially when cold

My '90 E30 with the six cylinder M20 engine idles unevenly, especially when the engine is cold. A local mechanic said the mixture seems to be too fat but had no concrete solution saying I have to live ...
0
votes
2answers
3k views

Why does RPM jump between 1000 and 2000 at standstill (2002 Mercedes-Benz CLK 200 K)?

My car has a kind of a rough idle and it's like it gives a bit of gas, meter goes between 1000 and 2000 rpm at standstill. Same if I shift up to 1 or 2nd gear. If I then take it for a drive, car jerks ...
5
votes
3answers
10k views

Car dying at low RPM only after filling up with gas

My question is closely related to one about a Jag dying at low RPM, but is slightly different because it only occurs after refueling and because the problem persists after cleaning the throttle body, ...
4
votes
9answers
18k views

1999 Mazda 626 Shakes when Idle

I've got a 1999 Mazda 626 that shakes really badly when idling. It gets a little better when put into neutral, but not much. I've had two people suggest possibilities: Fuel filter Vacuum hose ...
4
votes
11answers
39k views

Honda Accord 2000 V6 intermitently stalls when idling after start. What may cause it?

I have 2000 Honda Accord V6 with 140K miles and which is very well maintained and runs really nicely. However, every once in a while when I start it it would do some erratic rpm changes on idle and ...
1
vote
2answers
1k views

Vehicle sputters on cold start on cold mornings

I have a 1998 Ford Explorer with really low miles (< 30,000 miles; classic "little old lady who only drove it to the grocery store once a week" type vehicle). The first time I start it on cold ...
2
votes
2answers
764 views

is there any way to adjust my idle speed - 2003 Cadillac CTS

My 2003 CTS vibrates pretty bad at idle speed (around 600 RPMs) But If I rev up to 800 or so, it's totally smooth. The real problem is partially due to worn motor mounts, but I dont want to spend ...
3
votes
1answer
8k views

Hard shuttering and engine dies when A/C is on at idle

When the car is idling and the A/C is turned the engine will shutter hard and/or turn off. I've already replaced the IAC valve; it was working for a little, but now it's back to shutting off. The ...
4
votes
2answers
850 views

1998 Ford Ranger surges when idling

What should I be looking at to diagnose my Ford Ranger which surges when stopped? This typically only happens while the vehicle is warming up. After that, it's fine.
2
votes
2answers
351 views

1991 Bonneville Idles Poorly When Stopped

Recently my '91 Bonneville has been having an issue with idling while stopped, which may or may not have coincided with Service Engine Soon light turning on. The main symptom is an overall drop in the ...