Darn high idle
#1
Darn high idle
When I first picked up my 98 v6 manual 4WD, it had a rough idle... I cleaned the MAF, replaced the air filter, ran some seafoam through... and it was fine for about 3k.... now the rough/ high idle is back. Now when I am sitting at a stoplight with the truck in neutral, it idles as high as 1300 rpm. Then again, sometimes, it idles perfect at the 600-700 rpm level. What gives?
Also today, the check engine light came on.
I had changed the spark plugs when I first got it, and cleaned what I described above, so I am at a loss for what could be causing this new condition. Any ideas? Thanks
Also today, the check engine light came on.
I had changed the spark plugs when I first got it, and cleaned what I described above, so I am at a loss for what could be causing this new condition. Any ideas? Thanks
#3
Is the idle high all the time, when the engine is hot or cold? Mine runs high when it is cold (probably to heat up quicker), and I imagine most other do as well. I think I idle at about that speed when I first start it up in the day.
#4
Contributing Member
You can try cleaning it and see if that helps.
Search on YT for IAC and you'll find a few threads on how to clean it.
#5
Just to check, I cleaned the MAF again before going out tonight, and it still did it.
(And no, its not just when cold... its all the time... 5 minutes after startup to 3 hours after highway driving)
I also noticed tonight, if I tap the throttle a bit, the revs will sometimes drop a few hundred rpm before darting around a bit then settling around 1000 rpm.
I will definitely check for the IAC valve cleaning procedure... I hope its not too bad.
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Blamalam
86-95 Trucks & 4Runners
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03-12-2022 07:34 AM