Thread: Can't figure this out...

Originally Posted by BillBoost37

since you cammed, your rpm is likely fluctuating a bit more at idle in gear. Anytime the rpm dips under 600 the pcm turns off the field to the alt. Which means .. it turns it off for a moment.

Try raising your in gear rpm by 100 and see if that cures the issue.

Okay. I will try that. I also noticed during these surges, my IAC number is extremely high (mid 250's I think). It's a brand new IAC valve.

I started the car up after school, and started driving, and it was acting te same way it does when I turn sharply. It wanted to stall out. My LTFT's went extremely negative, and my car went very lean. I had to press the throttle about 50% of the way down to move the RPM. It wasn't responding to it at all. As soon as I let off, it stalled out. It's strange my car only has these symptoms when cold. 2 minutes after it's warmed up, it's fine. I'm wondering if it's any tuning tables relating to ECT (spark, AFR correction etc). My idle on cold starts is already like 1000 RPM. That should be more than fine for a VS cam.