SCTA99

My car has a horrible cold start in the mornings to where it will die after its started. Then whever I finially get it to idle it will get down to around 300 rpms and fluctuate between there and 500 then around operating temp it will rev up to about 1200 for about 20 seconds then drop to 800 rpms and be fine unless I turn the heater on and sometimes whenver I put it in gear it will start screwing up again. Also, my ac clutch will engage sometimes and blow cold air, but ive noticed around operating temperature the ac clutch will engage then disengage and mess up the vehicles idle and continue to do this until I shut off the ac... and help will be appreciated. Thank you all.

mannyman84

iTrader: (2)

what car? what year? any mods?....... what color? haha jk

Saturn5

That's a common problem with '64 Ford Falcon station wagons.
Have you checked the distributor hold down on your straight six?

SCTA99

"mannyman84" I own a 99 pontiac trans am, lingenfelter intake, 42# green top injectors, d1-sc ATI procharger, Racetronix fuel pump with racetronix wireing harness. It started doing this whenever I changed my CTS and lost coolant. I recently had it flushed at a dealership but its still doing this. could it be possible that because I mixed green coolant and dextron that its gelled up my system and perhaps messed up my thermostat?

mannyman84

iTrader: (2)

Does it have a rough idle? Changing the thermostat would be a good idea. Check your injectors, my GTA used to do that. Injectors where bad. Well like 3 of em.

SCTA99

yes it is idling rough, sometimes kills itself out of no where. Alright ill try and pick up a stethascope sometime this weekend and see if I can find anything out. Ill keep you updated.

SCTA99

Well whenever I unplug my MAF sensor it runs perfectly, no problems, but im just worried that thats not the problem, because last time the car was messing up real bad I unplugged it and it ran better for a while but that wasnt the problem, the problem was a slit in the fuel pump hose. Im just not sure if I should get a greater air flow MAF because the one I have is factory.

fleetmgr

First thing to do with the MAF is try cleaning it.

1BAD_LS1 Tunes

iTrader: (8)

well i would look at the MAF and 02's... and make sure the injectors and AC parimeters are tuned correctly also

SCTA99

If it was my O2's would it show a code?

The Bronx Bull

This is probably the key to your problem. Take any leads you have, and run with them. Try cleaning the MAF.