There's probably about 1000 answes to this, but I'll ask anyway. I have a '93 Camaro 3.4 that is running and idling very rough. Sometimes it will smooth out for a few seconds, but then it will start running rough again. Big loss of power, and gas milage. Replaced the MAP, and O2 sensor, plugs, wires, EGR, and cat converter. It acts like a vacuum leak, but I can't find one. any ideas? Thanx.

 

have you tried to reset the idle?

pull the PCM fuses, put them back in, then start the car and pull it into drive immedatly with the AC off, then let it idle for 5 min, turn it off, then let it sit for 10 sec, then start it and let it idle for 5 more min.. see if that helps


also how many miles do you have?

 

118,000.

 

I've got the same problem too and i can't figure out how to fix it

 

Guys, I got the same problem to with my 93 3.4L. It runs like a caddy on the expressway and driving, but idles like a monster truck at stop lights. Replace all of the above to. Im starting to think that it might me the exhaust. Anyone fix it or at least chase it down?