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Cadillac
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Discussion Starter #1
Hello. Can you help me diagnose a fuel pump problem. After the car is hot, it runs eratically and stalls. Engine RPMs are going up and down. Ever had this happen?
 

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White Diamond '03 DHS (with DTS floor shift)
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Put a fuel pressure gauge on it and see what the pressure does when this happens.
 

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Cadillac Eldorado
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I have the exact problem with my '93 Eldo. Replaced FPR and it ran fine for a day or two. Now it won't start at all. Uncertain if the fuel pump even comes on. Trouble code P020 in history(open in fuel pump circuit). I had 8V at the pump fuse, shook the harness and got 12V. Still won't start. No time to look at it. Any info you got would be helpful.
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,984 Posts
Trouble code P020 in history(open in fuel pump circuit).
Check the fuse. If OK, check the connector. If OK probably a bad pump would be my guess.
 
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