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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29396
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2000 chevrolet s10: 4.3 liter..trouble codes p0171, p0174

Customer Question

I have a 2000 chevrolet s10 4.3 liter, i have the trouble codes P0171, P0174,P0300. What can I do to fix these codes
Submitted: 4 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 4 years ago.

GM Tech (Cam) :

Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

GM Tech (Cam) :

These codes in combination often mean a fuel system is is there, such as a plugged fuel filter or failing pump

GM Tech (Cam) :

So to start off with, when did you last change your fuel pump"

GM Tech (Cam) :

sorry fuel filter?

GM Tech (Cam) and 5 other Chevy Specialists are ready to help you
Customer: replied 4 years ago.
The fuel filter/pump was changed last year. The fuel regulator was changed last week, and the vacuum lines, fuel cap have also been replaced.
Expert:  GM Tech (Cam) replied 4 years ago.
OK but was the filter dirty and plugged James?
Customer: replied 4 years ago.
Relist: Incomplete answer.
Expert:  GM Tech (Cam) replied 4 years ago.
Was the fuel filter plugged James?
I asl because a plugged filter will cause the pump, even a new pump to fail fast so we need to start at the beginning.
Customer: replied 4 years ago.
The fuel pump/filter wasnt clogged
Expert:  GM Tech (Cam) replied 4 years ago.
They are different items, the filter is on the frame, pump is in the tank so I am not concerned if the pump was plugged, only the filter.

Do you have a fuel pressure gauge?