Thread: Chevy Truck World

it deffinatly wont be the O2 sensor cause even if the are unplugged or filled with junk they will go into closed loop with a preset fuel air mixture and you r engine will run a little junky but nothin serious like the surgin your talkin about. O2 sensor could throw a code though if not workin

what do you mean by surges back and forth with the afterburner muffler and no cat you will have a more noticable lope in the sound at idle

what i meant from surges was that when i get up to speed limit and back of the gas to cruise it starts it surging the rpm raises and drops for a crappy ride. so i have to constantly play with the gas peddle. the ac thing might be the prob cause it leaks oil out the compressor. i spent $99.95 at a free ac check to have it filled with dye. when i went back they told me what was up $600 to replace it. i really dont care for the ac ne ways. what...

you can throw out the whole ac compressor and put in a pully so there is just that in its place. you just wont have AC anymore.

OK if you have the A/C on when your driveing and your engine surgges and then backs off then surges agian every 10 to 30 sec means your low on freon and the A/C compressor is cycling on and off to tell you your low

TPS or IAC sensors