This just started happening.
1998 Dodge Dakota, V8 (5.2L), Auto, 98k milesDriving along then let off the gas. RPMs drop to near zero then come back to life (engine stalls). Also random stalling at stop lights/signs or during low speeds with next to no acceleration. No codes showing. Also noticed that the right side PCV valve rattles and/or it sounds like a rattling or a little motor winding down towards the rear of the engine. I felt the PCV valve when the engine was turned off and it did rattle. I replaced the PCV valve today and the same thing is happening- rattling when motor is revved up then let go of throttle or shutting the engine off.
I can't seem to make it happen either. It does it at random.
Clues? Suggestions?