What causes a 2006 Pontiac grand prix not to have fire to fuel system?

Answer 1

If you are refering to battery voltage to the fuel injectors, I had a shorted injector once on a 93 Grand Prix which pulled down the voltage from the ECM & none of the injectors would open. I discovered it by accident because I left 1 of the 2 injectors that I could get to unplugged & the motor started but missed of course. When I plugged in the injector the motor died & wouldn't start. Replaced injector, problem solved. As I recall there were only a few ohms difference between a good injector & the bad one that I had, when doing a comparison. I'm not entirely sure what your refering to when you say "fire" to the fuel system. In the preceeding answer I'm assuming you have fuel pressure. When you first turn on the key you should hear the pump run in the tank. You can have someone else listen at the fuel fill cap. Take it off & turn the key on but don't try to start the motor. You should hear a whirring sound for about 2 seconds. The only way to be sure you have pressure is to buy a guage which can be screwed onto the shraeder valve located on the fuel rail on a multiport fuel injection system. Don't do this with a hot motor. As you put on the guage & remove it gas may spray out if the fuel pump is working. I think my car required 45 psi to operate properly. I would recommend buying a Haynes Manual for your car. They are available at auto zone & seem to aggravate me less often than chiltons. If you don't have fire to the spark plugs on the ignition system it could be a bad coil or a multitude of other things. Follow the trouble shooting guide in the Haynes manual & hopefully you will finger it out. Good luck.