Idle issue that comes after 20 min of driving
#1
Idle issue that comes after 20 min of driving
Hey guys, I wanted to see if someone could help/ identify what is going on with my car. It’s an ‘05 Evo 8 (pretty stock). The car starts and runs fine for a while (over 20 min). Occasionally it will act bad during idle (and only at idle). When it happens the vacuum comes up to -10 and air fuel is normal to lean. The RPM drop to about 500 or less and feels like it wants to stall. If you apply throttle to get over 1500 RPM, the vacuum goes back to where it should (-19ish). Crusing feels fine decel will bring the vacuum back to -20. If you turn the car off for 5 minutes or more the issue goes away for a period of time. Yesterday on my way home it started again so I unplugged the MAF. It did change the way the car idled so I don’t think it is the maf. I question it being a boost leak seeing that it comes and goes but only at idle. I wouldn’t think a boost leak would go away and come back. Anyone else have this issue? Anyone have an idea that would affect idle and raise vacuum?
#4
It just started last week. I haven't done anything to it lately. The only thing that has an issue is the AC started to act up. The AC blows cold for about the same amount of time. I didn't have the AC on yesterday but the idle still acted up after a little drive.
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iD33 (Aug 7, 2021)
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