97 gmc sierra fuel pump relay gets hot
dustywb1
08-01-2009, 08:44 PM
the relay gets hot and shuts down the fuel pump let it cool off and truck starts again anyone know what the problem is
567234ta
08-20-2009, 01:43 AM
the relay gets hot and shuts down the fuel pump let it cool off and truck starts again anyone know what the problem is
typically a lot of resistant would cause it.
how many miles on the fuel pump? may be the fuel pump going bad or just the wiring is corroded
typically a lot of resistant would cause it.
how many miles on the fuel pump? may be the fuel pump going bad or just the wiring is corroded
swensonb71
09-12-2009, 06:26 PM
it is the fuel pump going bad. had this same problem on a 99 silverado and 96 tahoe. replaced the fuel pump and never had it happen again.
brcidd
09-12-2009, 08:18 PM
That is why the oil pressure switch runs fuel pump gray wire in parallel- in case of fuel pump relay failure..
Your service manual fuel pump wiring diagram clearly shows the fuel pump relay in parallel with the oil pressure switch...and the text describes that it is this way in case of relay failure.....so how does the relay alone shut you down? you must have another problem- like a worn out fuel pump.....
Your service manual fuel pump wiring diagram clearly shows the fuel pump relay in parallel with the oil pressure switch...and the text describes that it is this way in case of relay failure.....so how does the relay alone shut you down? you must have another problem- like a worn out fuel pump.....
dustywb1
12-04-2009, 05:05 PM
i just had a bad conection on the the relay fixed and cleaned it and no problems in 3000 miles
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