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Vladgmru, Automotive Electrician
Category: Ford
Satisfied Customers: 2668
Experience:  I've been working with American made cars since 1992.
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how do i know if my fuel pump is going out? 2002 ford explorer

Resolved Question:

how do i know if my fuel pump is going out? 2002 ford explorer
Submitted: 8 years ago.
Category: Ford
Expert:  Vladgmru replied 8 years ago.
Thanks for choosing JustAnswer.
My name is Vladimir.
If your fuel pump is going out you may experience the following symptoms:
1) The engine may stall or not response to throttle.
2) The engine may misfire and hesitate and if you rev it up, it can backfire.
3) Lack of power going uphill or when you need to accelerate.
The fuel pressure should be checked with a special pressure gauge if you have some fuel related problems. It should be 39-65 PSI ( 4.6L engine) or 30-65PSI ( 4.0L engine).
Vladgmru and 8 other Ford Specialists are ready to help you
Customer: replied 8 years ago.
Our problem has been that the car won't restart after driving a little ways(10 miles) and turning off the engine. The engine turns over and if we leave it for an hour--it will restart after 1-3 tries. Does that sound like the fuel pump? Our ford dealer said they can only test the pressure if it isn't restarting and we haven't had to have it towed to them yet.
Expert:  Vladgmru replied 8 years ago.
Yes, it could be the faulty fuel pump as well as ignition system issue or other problems.
Your dealer was right, the fuel presure should be checked when the problem exists.
When the problem occurs, listen for the fuel pump whining for first 1-3 seconds with the ignition ON.
If you hear the pump priming noise, try to start your car with the gas pedal slightly depressed.
You can also check for spark from any ignition wire.Use an old spark plug connect it to any ignition wire and touch the engine ground, have the engine cranked and look for spark.
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