timing off
my 1990 300zx is idling rough what could cause this?
a longer cam shaft will make a car idle rough
I would suggest a new set of plug wires.
Never as the 1998 Chevrolet Cavalier does not have a belt, it has a chain that should last the life of the engine.
Vacuum leak
The right person to ask would be either someone who owns a 1988 Chevrolet Cavalier or a mechanic at a Chevrolet dealership. This question is too complicated to answer in a simple manner.
Around 90-100 dollars
Would have been built for R12, can be converted to R134a.
Radiator could be plugged or restricted
if it's idling rough, I would suggest cleaning the throttle body with carburetor cleaner.
The most common cause of rough idling would be a bad or clogged fuel injector. Also look for the hose on your EGR valve. They tend to come off in hot weather. If the hose comes off the engine will definitely run rough. I had to put a small hose clamp on mine to keep it from comming off. Spiritchsr1
it probably doesnt like you amd wanted to drive off