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Chris (aka- Moose)
Chris (aka- Moose), Pontiac Technician
Category: Pontiac
Satisfied Customers: 48323
Experience:  16 years of experience
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1997 sunfire won't start. All fuses are good, fuel pump

Customer Question

1997 sunfire won't start. All fuses are good, fuel pump relay is good. Relay not clicking when plugged in. Relay socket hot on one post, the other three are not. Has anti theft light that stays on when in the run position.
Submitted: 1 year ago.
Category: Pontiac
Expert:  Chris (aka- Moose) replied 1 year ago.

Welcome, I'm Chris (aka Moose). Experts aren't employees / agents of Just Answer. We are independent service providers using the Site to sell their Expert knowledge to Customers. I strive to provide EXCELLENT 5 STAR service, let me know what's needed from me so your pleased.

When you checked the starter relay di you have the key held in the start position when checking pins for power?

Have you tried reprogramming the pass lock theft key?

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Customer: replied 1 year ago.
I did have the key in on position when checking for power at the relay plug in ( one post was hot but none of the other three were). I also tried to reset by leaving key in run position for ten minutes then turning to off position for five seconds, repeating three times in a row. Showing low voltage on one of the wires back at the fuel pump. The rest of the wires at the fuel pump have no power with key in run position.
Expert:  Chris (aka- Moose) replied 1 year ago.

The key needs to be held in the START position when checking the pins at the starter relay. Can you do that?

You mentioned the fuel pump relay, is the concenr it cranks but does not start from no fuel pressure or it will not will not crank?

Customer: replied 1 year ago.
Shoot, sorry I left That out. It cranks fine and getting fire. Just not getting fuel. Thought it was fuel pump at first but after checking fuel pump relay, I found that it was not clicking. Sorry about leaving out critical fact.
Expert:  Chris (aka- Moose) replied 1 year ago.

No problem.

2.2 or 2.4 engine?

Coupe sedan, convertible?

Auto or Manual transaxle?

Customer: replied 1 year ago.
Pontiac sunfire Gt 2.4 automatic.
Expert:  Chris (aka- Moose) replied 1 year ago.

Below is a link to your circuit.

https://dl.dropboxusercontent.com/u/90220402/sunfire.pdf

With the pump relay removed and a wire jumped from pin 3-5 does the pump run and does the car start?

Is pin 1 always grounded?

You already verified pin 5 is powered all the time and pin 2 is not powering up with the key on.

Turn the key on and leave it for 10 minutes, does the theft light go out?

Customer: replied 1 year ago.
Jumper doesn't run fuel pump, car cranks but wot start.
Pin is grounded.
Anti theft light stays on (no flashing) after 10 minutes.
Expert:  Chris (aka- Moose) replied 1 year ago.

Since the jumper did not even run the pump this means the pump is bad or has broken wires to it. For the relay not getting energized on its own we need to confirm all the powers and grounds to the computer are good. Can you do that from the previous diagram?

Expert:  Chris (aka- Moose) replied 1 year ago.

Hello again Chris here,

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Thanks Chris