Mechanics

GTP WON'T START

2000 Pontiac Grand Prix • 6 cylinder FWD Automatic •

I just did an engine swap on a 2000 pontiac grand prix gtp 3.8L s/c. After getting engine in we try to start the car but it would just turn over and wouldn't start. We checked the fuel lines and they seem to be getting fuel fine. Next thing we checked was the plugs for spark. There was no spark at all so we changed the crankshaft n camshaft position sensors with no change. I don't think it is the ignition control module because we didn't change it and before the original motor locked up due to blowing a piston it worked fine and spark plug wires are brand new. Will most likely have to change spark plugs after I fix the starting problem but as of right now it is pointless be there is no fire whats so ever coming from the coil packs. Last thought I had come up with was the security system was active but once checked thoroughly it is not that. I have been told by a couple of people the computer could be the problem. Is there a way to test that theory without finding a new computer for the car or a way to reprogram it that doesn't consist of me bringing the car to a dealership. Or if you have any other opinions on what it could be any and all help is appreciated.
Avatar
Tgilman92
March 27, 2011.



Is the fuel pressure within specs and also the injectors are pulsing

Rasmataz
Mar 27, 2011.
I haven't tested the actual fuel pressure but I know it is getting enough pressure but I'm more worried bout getting fire first that I can check later

Tiny
Tgilman92
Mar 27, 2011.
Fuel comes before fire, think! No fuel what is the fire gonna fire-lol-I suggest you confirmed it with a gauge and also if the injectors are energizing

Rasmataz
Mar 28, 2011.
Understandable but we had tried to get the plugs to spark against metal but they wouldn't. And I knew the engine was getting fuel what I didn't know was whether it was the proper pressure or not. Regardless I changed my ignition control module as per a mechanic my buddy knew who said it could possibly be that, car started right up

Tiny
Tgilman92
Mar 31, 2011.