I have a 94 GT, at idle bumps from 800 to 500 for about a minute, just keeps doing that and then stalls. I have cleaned the MAF sensor. I have cleaned the throtle body, still have the problem. Any Ideas? Air cleaner is brand new K&N.







vacum pressure is at 14 PSI. I cant figure it out, I have bbk headers no cats.

 

when was the last time you tuned the car? it sounds like you have a spark problem. maybe try swapping out the plugs and cap and rotors. also, when it is ready to stall and you try giving it a little gas does it stall or catch on?

 

its sounds like an iac problem..

 

Mine's did that every once in a while, doesn't have to be a big problem. Just go through all the tune up type stuff.

 

I just bought the car, I have no idea when it was last tuned. when I give it gas right before it stalls, it runs well. I will try the tune up, I think the original wires are on there.

Thanks

 

I agree with trips, I have had several of my cars have that type of symptom with a dirty IAC (idle air control). Clean it and see what happens. Good luck.