3.0 V6

[ewe2]

This has to do with a Quest van and figured the truck section might be the place to post it.

I have a 1996 Quest.

This does not happen all the time. That's why the dealer tells me they can't fix the problem. But it can't be the only 3.0 V6 to do this.

Mostly happens going down a hill with the A/C ON. 55 - 70 mph speed range. You let your foot off the gas to reduce speed and the rpm gauge and engine will flucuate between 1500 and 4000 rpm until you 1.) touch the gas or 2.) turn the A/C off. This never happens with the A/C off.

Also. With the AC on or Windshield defroster setting selected. When you come to a complete stop. You can feel the engine pulling. I put it in neutral and the RPMs raise to 1800 to 2000. After 10 seconds the rpms return to the normal 800 rpm area.

Any ideas as to what might be wrong? Any help would be appreciated.

Thanks, D