1991 Ford F-150 Truck won't start-inconsistent clicking from

Tiny
SOLOCHOE
  • MEMBER
  • 1991 FORD F-150
  • 6 CYL
  • 2WD
  • MANUAL
  • 130,000 MILES
I've asked a series of questions regarding my truck performance and thought I had the problem resolved. The truck seems to be running okay but now has problems starting and the problem is random. With the key on, there is inconsistent clicking sounds from the computer (self testing area). The truck will turn over but not start. If I floor the gas pedal, it will start but will sputter and die immediately and emit smoke from the exhaust. I'm assuming the smoke is from the engine being flooded with fuel. Again, the clicking is inconsistent and quick. I cannot run the code reader during this time. I just checked and can feel that it's the fuel pump relay that is clicking, however, this was replaced about a month ago.
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Thursday, April 16th, 2009 AT 10:46 AM

4 Replies

Tiny
BILLYMAC
  • EXPERT
Hi, right bside the relay for the fuel, which will be green is a brown relay this could cause this prob this is called an [EEC] relay. If you have not replaced it I would because they will go out. If this doesn, t fix the prob you will need another pcm. Good luck billymac
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Thursday, April 16th, 2009 AT 9:12 PM
Tiny
SOLOCHOE
  • MEMBER
I've called around and looked online and am having a hard time finding a EEC relay. The stores that I have called don't even seem to know what it is. Could it be called anything else? Perhaps, PCM relay? Also, would a fuel pump relay work instead? Everyone seems to carry that. If not, do you know of any stores/sites that carries this eec relay and also the pcm?
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Friday, April 17th, 2009 AT 11:56 AM
Tiny
SOLOCHOE
  • MEMBER
I managed to find the eec relay but found something quite interesting while looking for the pcm. I noticed some sort of module inserted into the computer. It's an aftermarker power tuning module made by Hypertech. I also managed to find the factory box for it behind my seat. It was obviously installed by the person I bought the truck from. After removing the module, the computer acted normally along with the fuel pump relay and stated with a little help. After burning up the excess fuel, the truck starts fine but is not running as smoothly. As soon and I reinstalled the aftermarket module, the computer started flippin out again. Needless to say, I'm keeping this module out. My question is, will the truck's computer learn again how to run without it or will I be forced to buy another module?
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Friday, April 17th, 2009 AT 2:38 PM
Tiny
BILLYMAC
  • EXPERT
Hi yes super chip. Your pcm should be able to relearn. BUT I would check the timeing and see if maybe this has been tweeked as well. When people use these chips they can make other adjustments as well these will have to be reset to specs. Good luck
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Friday, April 17th, 2009 AT 4:19 PM

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