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#1
12-05-2012, 03:23 AM
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Fuel pump or PCM?
I have a '92 f-150 inline 6 EFI with 221,000 miles. It is on it's 3rd fuel pump now and worried it may need a 4th. Here is the problem: if i turn the key on and the fuel pump primes normally (5 sec.), it will start fine. If the fuel pump runs non-stop when the key is turned on, it will not fire up and the engine just spins over. I have pulled the PCM and checked for corrosion, replaced the ignition module, coil, and MAP sensor. Any ideas would be helpful.
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