96 monte rough idle and acceleration

[96monte]

I have a 96 monte carlo with about 55,000 miles. A few months ago it started to idle really rough and acceleration was rough. i took it to a shop and paid $603 dollars to put a new alternator and battery in. The shop said that might be the problem. A few days later it started again and i ignored it for a couple of months. Then it died on me in a parking lot. The lights and everything else would come on but the rpms would drop so low the car wouldnt stay started. I took it back to the shop and they said the sparkplug wires were shorting out against the block. I paid $330 dollars to fix that and the next day it started again. I have a audio system in my car i dont know if that is causing it. Any suggestions????

[dwalmop]

Alternator and battery? Those bastards at the shop. Is your service engine soon light on? If so go get the codes pulled and let us know what they are.

[96monte]

yeah the check engine soon light came on

[audiopro]

96'

Does the rpm's drop off when you are driving and let off the accelerator?
if it does look into replacing the fuel filter. they are pieces of crap i have to change mine very offten to keep them flowing good. better gas will help also.
my car has the same problem. i also put a couple of cans of bg 44k in it and it made it run a lot better, took a lot of the rattling out of it!

help it helps

[dwalmop]

Go to Autozone and get the codes pulled. That should give you a pretty good indication of the problem.