Car turns over but wont start

Tiny
GMADEYA02
  • MEMBER
  • 2002 SATURN L300
Car turns over but wont start, don't hear the fuel pump turn on, how do trouble shoot the cps and the fuel pump, and where is the cps located
Tuesday, June 3rd, 2008 AT 9:20 PM

2 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

A fuel pump can be inoperative due to a bad relay, faulty wiring harness or a defective pump.
It is always good idea to first check the fuel pump relay.
The relay is located under the hood fuse box (see diagram below for location).
Inspect the relay for any corrosion or burnt pin(s).
You can also test the relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If the relay is good then check to see if you are getting power to the fuel pump connector with the key to the on position.

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

If you do not have power to the harness then it is likely due to a short in the circuit and you will have to trace the wires to find that.
If you do have power to the connector then you probably have a bad pump.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I have attached the fuel pump replacement procedure including the tank removal for your reference.

Please let me know of any questions.
Thank you.
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Saturday, September 18th, 2021 AT 3:05 PM

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