Just my $.02, I had a consistent click rattle that would occur whe the car was idling and was very distinct at fast food drive-throughs. The timing chain tensioner on '88s and '89s was too small, a Tech Bulletin was issued that a larger size tensioner should be used. Often these smaller tensioners lost thier spring, and would hang against the chain, and not provide tension. It would also produce a rattling, clicking noise that was hard to isolate. Once I changed the timing chain and tensioner, the sound was gone. If you haven't had the tensioner replaced on your '88 that is a likely source of your sound.<P>Good luck!<p>[ 12-07-2001: Message edited by: wheresjim ]