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Just joined.  First post.  I have a '93 DeVille with a 4.9.  

First question would be, if I have a Fuel Pump that is going bad, would it show up on the Codes?

Thanks

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I think you would need to check the fuel pressure at the rail.  A fuel pressure regulator can show similar symptoms to a bad fuel pump btw.


Bruce

2016 Cadillac ATS-V gray/black; 2013 Cadillac ATS 2L Turbo Premium (Wife's)

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The short answer is I doubt it.

Other than driveability and other codes  related to fuel trim the best way to tell is to check fuel pressure.

Even more obvious may be the sound of the pump itself.


GM FAN FOREVER

Nice, clean, luxury= fine automobile

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OK, thanks.

The Pump sounds OK and everything seems normal with it.  My problem is that the car cut out on me again after a full tune-up last fall.  I want to start with ruling out the Fuel Pump as a possibility.  I have a Gauge on order.  Thanks again. 

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You can usually borrow one from your big box auto parts school.

You gonna have to buy/rent a fuel line clip wrench too IIRC.

71nVRio3RkL._SL1500_.jpg


93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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