Still bad running idle
08-18-2015, 03:56 PM
#1
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Car: Camaro Iroc-Z -89
Engine: 350 TPI
Transmission: Automatic
Still bad running idle
Hi!
Like many others I'm too experiencing a nervous idle and low throttle running. Sometimes the engine barely stays running and sometimes, just after starting, it revs up to 1500-2000 and stays. In moderate cruising or acceleration it runs fine.
I've checked for vacuum leaks, cleaned the IAC and O2 sensor, adjusted (only slightly) the TPS but nothing helps. Did buy a new fuel filter not yet installed.
When I ran the engine with the O2 sensor unplugged, it was the same. Does this mean anything?
When I unplugged the MAF the engine died. Anything?
I shot two very short videos of the phenomenon. Can anyone make anything out of this?
Thanks!
BR,
Per
Like many others I'm too experiencing a nervous idle and low throttle running. Sometimes the engine barely stays running and sometimes, just after starting, it revs up to 1500-2000 and stays. In moderate cruising or acceleration it runs fine.
I've checked for vacuum leaks, cleaned the IAC and O2 sensor, adjusted (only slightly) the TPS but nothing helps. Did buy a new fuel filter not yet installed.
When I ran the engine with the O2 sensor unplugged, it was the same. Does this mean anything?
When I unplugged the MAF the engine died. Anything?
I shot two very short videos of the phenomenon. Can anyone make anything out of this?
Thanks!
BR,
Per
08-21-2015, 04:13 PM
#3
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Car: Camaro Iroc-Z -89
Engine: 350 TPI
Transmission: Automatic
Re: Still bad running idle
Hi!
Okay, so your car behaves this way too. What have you tried??
Today I tried to clean the MAF with a special kind of MAF cleaner. Not sure if ot was a little better but probably not. I'm suspecting electrical problem of some sort... lights flickered (first time I noticed) when I took it for a test drive tonight.
Haha, actually the video makes look a little better than it actually does but thanks! If it would only run descent as well.
Let me know how you're getting along!
//Per
Okay, so your car behaves this way too. What have you tried??
Today I tried to clean the MAF with a special kind of MAF cleaner. Not sure if ot was a little better but probably not. I'm suspecting electrical problem of some sort... lights flickered (first time I noticed) when I took it for a test drive tonight.
Haha, actually the video makes look a little better than it actually does but thanks! If it would only run descent as well.
Let me know how you're getting along!
//Per
08-21-2015, 05:51 PM
#4
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Location: Washington State
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Car: 1986 IROC Z
Engine: 305 TPI
Transmission: Auto
Re: Still bad running idle
Hi!
Okay, so your car behaves this way too. What have you tried??
Today I tried to clean the MAF with a special kind of MAF cleaner. Not sure if ot was a little better but probably not. I'm suspecting electrical problem of some sort... lights flickered (first time I noticed) when I took it for a test drive tonight.
Haha, actually the video makes look a little better than it actually does but thanks! If it would only run descent as well.
Let me know how you're getting along!
//Per
Okay, so your car behaves this way too. What have you tried??
Today I tried to clean the MAF with a special kind of MAF cleaner. Not sure if ot was a little better but probably not. I'm suspecting electrical problem of some sort... lights flickered (first time I noticed) when I took it for a test drive tonight.
Haha, actually the video makes look a little better than it actually does but thanks! If it would only run descent as well.
Let me know how you're getting along!
//Per
I found out I need to drive the car for about 20 minutes after adjusting the IAC minimum air. I haven't been doing this cuz I just recently got it to run good enough to trust taking it out. Will try it this weekend.
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