What could be wrong?

[Kyles93Z34]

All right, i have a 93 Lumina Z34 that for the past 4 weeks has been giving me a lot of pains with things going wrong left and right. I have been posting on this link for most of the time but i am not getting a lot of help there so i was wondering if yall could help me.

http://www.z34store.com/z34board/viewtopic.php?t=183

Any thoughts would help. Thanks

Kyle

[Kyles93Z34]

I just noticed that i put it in the wrong section. Sorry, i just always go to performance.

Kyle

[dohcfiend]

could be a vac leak. a big one, check your pcv connections. or your maf but that would get u a ses light.

EDIT: shit that's right a 93 no maf dooh.

[SappySE107]

Check the MAP sensor lines. There should be 3 going to it. Sounds like a vacuum leak somewhere and the MAP sensor doesn't like the reading.

[Juglenaut]

It is a performance issue so don't kick yourself.

Well checking for fuel pressure, replacing the fuel filter, and testing the fuel regulator. Also could be an ICM/per coil problem. Sadly it may also be a syptom of a bad fuel pump, but check less expensive (also easier to replace in most cases) fuel and ignition system components first.

As it is starting harsh and stalling predictably, a MAP fault code would be stored if it is the problem.

[Kyles93Z34]

This is getting weird. It has cranked up perfectly the past 2 days, but on 1 condition. The a/c has to be on. With out the a/c on it will die 2 seconds after i start it. Thanks for the help i will try to get to it sometime this week.

Kyle

[pepsi_coke]

The A/C raises the idle