I got a 2005 Ford Freestyle, automatic, 160kish miles.
It's had an intermittent stalling issue. Doesn't throw a code. It only does it when warmed up, and usually only when decelerating. It has done it during acceleration but much more rarely. The engine chugs then quits, lights stay on. I've noticed the RPMs tend to bounce from 0.5-1.5k when warm and decelerating.
I've had a cluster of other issues that may or may not be related. Recently replaced fuel filter, fuel pump, fuel rail pressure sensor, maf sensor, ac compressor, and had wiring to the compressor repaired. I've cleaned the throttle body and replaced it's gasket to no avail.
I appreciate any help!
The bounce you are referring too is called "idle hunting." I would need to know if it does it more when its cold? If it does it more going down a hill? Does the car have any modifications? Is it a manual or automatic transmission?
It's an automatic transmission. No modifications. It doesn't seem to make a difference if it's uphill, downhill or level on the idle hunting. It only does it when warm, and primarily when decelerating. It drives like a champ on my short 4 mile drive to work, but any more than that and it starts having this issue.