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Tuner
Strange Idle Issue?
I have a strange problem where my car sometimes idles at completely different IAC positions when warmed up.
For example, this morning I started up the car and left it sitting until it was fully warmed up and idling fine, however the IAC was sitting at about 150.
I then drove a short distance up the road and stopped at a set of lights. Once the car found its idle again it was idling with the IAC at about 35 where I would like it.
WTF is going on here??
Looking at the logs, nothing has really changed. AFR is at about 0.97 lambda, IAT hasn't changed by more than 3 or 4 degrees, idle timing still around 16 degrees, same MAP, same RPM, etc.
I tend to think my throttle body may be slightly sticking or perhaps the IAC is playing up? Throttle body is a Fast 92mm.
Cheers
Benno
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Tuner