96 Grand Caravan Stalling & downsurging
My van is a 96 Grand Caravan with the 3.3l and about 202395 miles.
On occation, while stopped at a red light the engine will die.
Also on occation, while driving, the vehicle begins to feel very strange. It is like the engine is bogging down, but I barely loose speed and the tach also only drops slightly. Yet I am pulled against the seatbelt as if I was slowing down hard. The engine will sound deeper, and slower when this happens like it is pulling something heavy.
It occurs at completely random times and for random durations. I can interrupt it by either applying my foot to or removing my foot from the gas pedal. When I do this the vehicle normalizes until the next time. If I leave the pedal where it is it will recover on its own - in anywheres from a second to about 15 seconds.
It seems that it is more likely on warmer days. The sensation seems more pronounced when the AC is running.
This issue, whatever it is causes no codes, AT ALL.
I have driven around with different knowledgeable mechanics, and have been repeatedly told, "When it, whatever it is, breaks bring the van back and I'll fix it."
I would rather not wait until I am stranded on the side of some road before I find out what it is.
Any suggestions as to what could cause this kind of thing without producing a code?