Much more informative. Which engine do you have? Still don't know what it sounds like or when it does it.
I have an '88 Grand Caravan daily driver with the 3.0L engine that has been making a loud clicking sound for the last eight years, but only at idle. It runs fine but people get out of my way in parking lots.
I also have an '89 Grand Voyager 3.0L that had loud knocking and pulsing oil pressure from a spun crankshaft bearing and damaged crankshaft. It needed a total engine rebuild. I suspect your problem is somewhere between those two extremes.
Wednesday, July 20th, 2011 AT 3:09 PM