Brenneman2385
Active Member
TobyU, thanks for the response. I am not familiar with the air bypass valve you are speaking of. Can you tell me where this is located, or provide a picture? I googled it but it kept coming back with IAC, which this does not have.Short of vacuum leaks, the only thing I know that will cause those types of conditions is the air bypass valve sticking. Maybe you could take it off and clean it out well with carb cleaner and work it back and forth or pick up a use cheaper for junkyard or a cheap one off of eBay.
I guess it's possible for a flat spot or a low fuel signal from the throttle position sensor but I doubt it. You should be able to monitor live data on a scan tool and maybe see more.
Thank you,