The concensus from this group is that my car (1990 Grand Caravan with 3.3L) has a worn timing chain (rattle from left side of engine at idle, goes away as engine speed increases) Most likely I'm going to be taking a pretty long trip relatively soon (~1,200 miles each way), so I'm planning to change the timing chain
Eric Kotz email@example.com
Very straight forward job, you will see the timing marks on the gear, line em up before disassembly and make sure the marks are lined the same when when you reassemble, If you go with Mopar parts, the last one I did still did not come with the crank shaft gear. Ask them when you purchase it.
Good luck' Glenn Beasley Chrysler Tech
I did this on a 93 3.3, don't know if the engines are the same. The actual job wasn't that bad, you have to support the engine because you must remove the passenger side motor mount. You also need to move the A/C out of the way if so equipped. The hardest part was getting the crank pulley on. It doesn't just slide on. I had to heat it up. It's probably best to get the entire set, crank and cam pulley and the chain. Also, you'll need the gasket set for the timing chain cover. It contains gaskets and o-rings. While you're in there you might as well replace the water pump.
hope this helps, nick