Quote:
Originally Posted by andyh1956
Sounds like your Idle Air Control Valve Pintle is not seating properly at closed throttle. Or MAYBE you EGR is fluttering due to malfunctioning vacuum controls. Plug it off & drive the truck to eliminate that part. Also disconnect the cruze cable & drive it.
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I just did some data logging yesterday and conclude there is nothing in the TBI system that is causing it.
It has to be the stall converter locking and unlocking, I though it my be something with shift solenoids but i downshifted as i slowed from 60 - 0mph and it does it in every gear.