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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15133
Experience:  GM Grand Master Technician 2007. 14 years experience.
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No power to fuel pump, only one wire hot at relay, car runs

Customer Question

no power to fuel pump, only one wire hot at relay, car runs fine if I run power streight to fuel pump
JA: Is the power loss consistent, or does it fluctuate?
Customer: consistent, checked PCM conections they look good, no bad wires
JA: What is the model/year of your Chevy?
Customer: 2000 chevy impala with a 3.8
JA: Are you fixing your Impala yourself? What have you tried so far?
Customer: i replaced the fuel pump because it didnt sound good but the no power problem was there before i change the fuel pump. it just stoped starting. had no pressure at fuel rail theni found the lose of power to the pump
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 27 days ago.
Category: Chevy
Expert:  AMEDEE replied 27 days ago.

Hello and welcome!

My name isCustomerand I can assist you with your question.

Expert:  AMEDEE replied 27 days ago.

Do you know which terminal or wire going to the relay has power?

Customer: replied 27 days ago.
left lower i think it was hot all the time , the fuse for fuel pump was good
Expert:  AMEDEE replied 27 days ago.

And the fuel pump fuse has power on it?

Customer: replied 27 days ago.
Expert:  AMEDEE replied 27 days ago.

Thank you for that information. And no codes in the computer?

Customer: replied 27 days ago.
there was a pcm code and fuel pump primary circut i cleared the codes when i changed the fuel pump , the one that came back was the fuel circut . the service engine soon light has been on with no codes
Expert:  AMEDEE replied 27 days ago.

Can I get the code that was stored in the computer?

Expert:  AMEDEE replied 26 days ago.

Hello! It'sCustomerfrom just answer.

I am just checking in to see if you need any further assistance?

Let me know!