Quote:
Originally Posted by TransAm400
It's been awhile since I messed with it but I did get it running better. I think reducing the idle timing helped. I believe I ended up around 16 degrees. The AFR at idle is close to the target and it is going into closed loop learn now.
I do still have an issue with the RPM's hanging up when I let off the throttle. TPS and IAC are at 0% but RPM will hang around 2,000 until I blip the throttle and then it will return to normal idle. That has been pretty annoying. I only drove the car a couple times in the past months since it was 100+ degrees all summer here in Houston. Looking forward to getting it out more now that it has cooled off.
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Something is going on with that. Throttle blade adjustment, issue with the IAC, vacuum leak or all of the above.
If your throttle is closed and the IAC is closed, the engine should darn near stall.