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1985 f-150 fuel problems

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Old Jan 6, 2005 | 09:37 PM
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itdorun
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1985 f-150 fuel problems

My 1985 f-150 will only run for a few seconds after starting. I have replaced both fuel pumps, eec relay, fuel pump relay, and the computer control module. It powers the pumps will starting but when the key is released the power to the pumps stop. The in tank fuel pump was locked up but I am not sure if this caused all of these problems.
 
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Old Jan 7, 2005 | 07:17 AM
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Check the TFI and pickup inside of the distributor. If the computer isn't getting timing signal when the key is released, the fuel pumps will turn off.
 
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Old Jan 7, 2005 | 08:07 AM
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Originally Posted by itdorun
My 1985 f-150 will only run for a few seconds after starting. I have replaced both fuel pumps, eec relay, fuel pump relay, and the computer control module. It powers the pumps will starting but when the key is released the power to the pumps stop. The in tank fuel pump was locked up but I am not sure if this caused all of these problems.
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Old Jan 8, 2005 | 02:56 AM
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Is the oil pressure sender still there? This is what the computer uses to run the pumps.
 
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