Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [rough-idle]

Questions about troubleshooting and solving rough idle problems

201 questions
13
votes
2 answers

Rough idle @ stoplights - O2 sensors reading zero voltage

I have an '05 4.7L Dodge Dakota that has had an issue with rough idle for over a year now. It seems to only happen after coming to a stop at a traffic light. It seems to happen more often after having driven a long distance but occasionally occurs…
kldavis4
  • 181
  • 1
  • 1
  • 6
11
votes
2 answers

My Ignition Timing is Retarded, no seriously, it's really screwed up

I logged some test data to try and help me figure out why my 98 Mazda 626 GF 2L ATX has a rough idle and is suffering from hesitation. (Speed k/h),(TPS_v),(MAF g/sec),(RPM),(SparkAdvance),(EngineLoad),(ST_FuelTrim) There are a few things standing…
Robert S. Barnes
  • 15,780
  • 72
  • 157
  • 249
11
votes
2 answers

2001 Infiniti QX4 rough idle - leaking fuel damper vacuum port

I have a bit of an involved problem, so I’ll break it down a bit and try to provide as much detail as possible. My main problem: I have a rough idle on my 2001 Infiniti QX4. It’s not extremely rough, but quite noticeable. It doesn’t happen all the…
atraudes
  • 707
  • 3
  • 11
9
votes
4 answers

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 needed. The shop noted the engine left and right…
caddymob
  • 193
  • 1
  • 1
  • 5
9
votes
2 answers

Solstice! Car starts to run rough after hitting the gas, intermittently.

So, after putting the A/C-delete belt on to take my POS A/C compressor out of play, everything works great: No frightening rattle / clanging from the engine bay Idles smooth Sounds like a brand new engine. Which it should, since I've only put about…
3Dave
  • 3,159
  • 3
  • 25
  • 39
9
votes
5 answers

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, as suggested by the answers. The car is a 2006…
Adam Wuerl
  • 303
  • 1
  • 2
  • 10
9
votes
5 answers

How to trigger an idle throttle position re-learn?

My Toyota Vitz 2007 idles roughly and I got advice to clean the throttle body and make the vehicle re-learn the idle by starting the engine and let it idle for some time. My question is, is it necessary to instruct the vehicle in some way…
Softcode
  • 1,013
  • 6
  • 16
  • 29
9
votes
1 answer

Idling issues on 1995 Kawasaki ZZR600

The bike was running rough and could not get a constant idle speed. I checked the air filter and it was pretty well shot (contamination, etc.). As I awaited delivery of the new air filter, as a test I ran the bike without the air filter and it had…
Bedeem11
  • 91
  • 1
  • 2
8
votes
1 answer

Rough idle only under load

I'm going to describe the symptoms with a very short history, some preliminary theories ( based on past work I've done on this car ), the data I've gathered and what, if any, conclusions I might draw from that data. The car is a 98 Mazda 626 GF 2L…
Robert S. Barnes
  • 15,780
  • 72
  • 157
  • 249
8
votes
3 answers

Astra MK6 - when warm, rough idle and shudders while accelerating

Here's a video: https://youtu.be/wYyaW9wRt6U For a couple of months now my car has had a rough idle and shudders while accelerating - Vauxhall Astra J Exclusiv MK6, 4 years old 61k miles spark plugs done last year. It starts off shuddering if I…
codaamok
  • 181
  • 1
  • 1
  • 4
8
votes
3 answers

My BMW 325xi smells like gas

It is difficult to start my BMW it runs rough and smells like raw gas from the exhaust pipe. My check engine light is on. What could be the problem? I just had the engine replaced I am over 8,000 dollars into this car! There is about 89,000 miles…
Diane N
  • 81
  • 1
  • 2
8
votes
1 answer

Engine hesitates and stalls when warm

My car is a Toyota Vitz 2007 and it has 80k KM on it. I usually drive short trips (about 5km) most of the time in a low traffic road. Car drives mostly fine in these short trips. But, if I drive for about 2 hours in a congested road with frequent…
Softcode
  • 1,013
  • 6
  • 16
  • 29
8
votes
2 answers

Is it healthy to drive with a bad IAC?

My IAC is bad and in order to keep my car running while a stop sign/light is to have one foot on the brake and one foot on the gas. Is this an effective fix to travel until I get it fixed? Or Should I just not drive it?
Kenny Hawkins
  • 81
  • 1
  • 1
  • 4
8
votes
3 answers

Rough Low Idle and Engine Shakes, Hesitation and Lack of Power

On a 98 Mazda 626 GF 2L I'm working on the engine seems to shake / wobble for about a second / second and a half when going to WOT from any starting rpm. It also almost sounded like maybe one of the belts was even momentarily slipping. If I…
Robert S. Barnes
  • 15,780
  • 72
  • 157
  • 249
7
votes
3 answers

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 again. It doesn't do this all the time, maybe only…
jdickson
  • 258
  • 1
  • 3
  • 8
1
2 3
…
13 14