Vehicle will not start

LANIYA16

MEMBER
2002 PONTIAC AZTEK
6 CYL
FWD
200,000 MILES

It was running fine until I filled the tank up then find out the fuel pump stop working. So I changed the fuel pump and filter. Still not starting. Had someone come put the hand held reader on it and one code pop up (think it was the heating sensor) changed it and still will not start up. Changed the fuel rely fuse, still not cranking. Someone came to look at it and poured gas into the motor and as long as the gas was going in it started but when you stop pouring the gas straight into it then it shuts off. Help

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

It sounds like you did the fuse and not the relay? If you did the relay then it sounds like you have a bad connection at the fuel pump. Here is a guide that will show you how to test for power at the fuel pump:

https://www.2carpros.com/articles/car-cranks-but-wont-start

If it is not getting power in other words the relay is not coming on then I would check the wiring, here is a guide for that:

https://www.2carpros.com/articles/how-to-check-wiring

I would unplug all fuel injectors and then check for pulse. I am thinking a shorted injector can "lock up" the injector driver in the PCM.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Last I would say the computer is having a problem if everything else checks out. Its location is below.

Please let us know what you find.

Cheers, Ken

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