I have a 98 gt that has been having problems starting at times. Sometimes it would not start at all and other times it would run fine after messing withe fuel pump reset. I was told by a me hanic that it was the factory alarm. The diablosport scanner read theft detected car immobilized. I tried having a new key made but this didnt work. So I had no choice but to take it to the dealership. They put a ccrm module in, pcm, and then a fuel pump. After getting the car to finally start it will not idle. To say the least I'm very frustrated! Any help would be greatly appreciated....

 

Check the IAC, air filter, fuel filter, plugs, wires, etc etc.

 

IAC first...