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How can you determine if your fuel pump is bad or if it is another problem you don't hear the fuel pump kick on and the car won't start at all Thanks?
Wiki User
∙ 17y ago
I just went through this on my 1987 s10 blazer. If it's like my pump, there is a connector with two plugs at the tank plus a ground wire. One wire goes to put twelve volts on the pump, the other sends info to the gauge on fuel level. Consult a manual to determine which wire it is, then put twelve volts to the fuel pump power. If it doesn't make a whirring noise, it's probably bad or you have a bad ground. I just started swapping out parts, the fuel pump relay was about 6 bucks and really easy to replace. Try that first. If that's not it, try replacing the oil pressure switch ($5-$35 depending on your car). Just hope that your pump isn't bad, because if it's inside the tank, it's a real pain to drain the tank and drop it. If you end up dropping the tank, just replace everything back there. When compared to a $70 pump, the hoses and wires are cheap so replace them preventitively especially if your car is getting old. Hope this helps!
Wiki User
∙ 17y ago
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