Question about 1992 Chevrolet S-10 Blazer

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Power in fuse box for fuel pump no power at wire harness by fuel

Had vehicle running and just quit already replaced fuel pump and was running good then just quit no power at wire harness by pump

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Check the fuse and relay for the fuel pump in the engine compartment fuse box near the battery... as well as the fuel shut off switch in the back (trunk) part of the vehicle


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Posted on Jan 31, 2009


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Car was running in driveway then just stopped. fuse was blown. replaced fuse ran for 5mins, fuse blew again. replaced fuse ran for 10mins fuse blew again. replaced fuel pump, car ran for three days then...


i am assuming that the fuse you are replacing is the fuse for the fuel pump, then replacing the fuel pump did solve ur problem for 3 days.

did you check again the fuse of the fuel pump? if it is blown again, try looking at manual to see if you are putting the right fuse. is the fuel pump that you put in is an original pump for the car or a replacement pump?.

if it is a replacement pump, kindly check the label and if you can find out what rating of fuse it is using then use that fuse rating for that particular pump.

another case could be another defective pump...could be a factory defect...

you can compare resistance of windings of pumps to find out if they have problems.

another thought could be if there is a return line on your fuel system..if this is clogged and building up a pressure on the fuel line, then this could cause a problem on your fuel pumps.

i hope i was able to solve ur problem,

pls rate me,

tnx drcool

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I have a 1997 Chevy Venture. I replaced the fuel pump, and relay. Checked all the fuses, and they were good. We then proceeded to tear the interior apart and check all the wring by tracing from pump to...

Well you have already confirmed there is a short in the harness or a connector.
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Thats wild.
The fuel pump - injector circuit is on one fuse and the brake circuit is on a different fuse. I can't think of a way the two would be connected other than something wrong with the fuse box.
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It might be easier to run a new wire from the pump relay to the pump outside of the main harness.
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Sounds like you have some experience. Will the vehicle run by applying power direct to the fuel pump? just trying to isolate a bad pump. If pump is confirmed good than you missed a wiring problem. Keep in touch.

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