OK, here is whats going on. I have a 2004 Z with 105k miles on it. I know I do a lot of driving with it. A few weeks ago it started to have a hard time starting. It would usually take two tries. So I ended up replacing the sparks and recharging my air filter. Now what happens is when I go to start it the rpms go up and die right back down usually stalling the car. This happens multiple times. If I give it some gas when I start it then its fine and it will stay running. It just seems it only happens when I first start it. When idle the rpms will fluctuate just a little. I'm not sure whats going on. Any suggestions? I did check all wires and hoses.

 

Check your fuel pump.....

 

Try cleaning your MAF.

 

Could it be the throttle positioning sensor?

 

it could be a whole list of things

 

Any CEL's?

 

Nope, no CELs. I guess I will try cleaning the throttle body this weekend to see if that helps at all.

 

MaF sensor
fuel pump
alternator
bad fuel injectors

 

^^^ yea can be a whole mess of problems.. have to diagnose per DSM..

 

I ended up cleaning the throttle body over the weekend and that seemed to do the trick. I didn't have any issues since. Thanks everyone!!