Thanks Shawn....

 

@mrmad40 - Since it sounds like you are still working on the same problem you already had a thread for, I merged the two. This way people can see what has been suggested and where you are at the moment.

I go back to an earlier question I had, what is the mileage and when was the last time plugs/wires were changed?
Also, have you checked for any vacuum leaks?

 

The engine is not the original this engine has about 85k on it. Checked the plugs spark on all of them.still no codes saved in computer. Thinking cam shaft sensor or crank shaft sensor???

 

Also checked for vacuum leaks.

 

Just disconnected the maf now im get a p102 and p108 code any ideas?????

 

By disconnecting MAF you got the codes? When reconnecting the MAF do the codes remain?

Aside from that what about fuel pressure?

Wouldn't wandering rpm sometimes point to fuel delivery?

My 04 Impala has cold start issue and we are pretty certain it is fuel pressure and is either fuel pressure regulator or fuel pump. No codes have ever been thrown on my car.

 

Good news so far...... Changed the Airfilter, Map And Mas let in run for 40 minutes runs good . But I'm afraid to take it for a ride LOL.... Thanks for all your help guys!!!!!