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!991 F-150 won't start

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  #31  
Old 03-29-2004, 07:28 AM
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Slade901
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Since your vehicle is having excess fuel. Two major possible culprit are ECT (Engine Coolant Temperature sensor) and Fuel Pressure Regulator diaphragm cracked and letting excess fuel go into the intake. The Fuel Pressure Regulator is controlled by a vacuum hose and if the diaphragm inside the Fuel Pressure Regulator breaks, the vacuum line is now sucking in too much fuel into the intake.

Read this article http://www.njbmwcca.org/Bulletin/phi...orum11-00.html

BTW, you need to change oil and oil filter after you fix the problem because now your oil is diluted with fuel.
 
  #32  
Old 03-29-2004, 09:05 AM
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ok thanks I will see if I can come up with a fuel pressure tester, maybe autozone will loan me one. thanks for the link and the help. I would have never thought Engine Coolant Temperature sensor would control fuel. but then again that would act like a choke, on a carburated model. Thanks for all the help!
 
  #33  
Old 03-29-2004, 09:15 AM
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I seriously doubt that the ECT will make it run as rich as you are describing.
 
  #34  
Old 03-29-2004, 09:19 AM
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Ok thanks I will try the fuel pressure regulator I relaced the throtle position sensor. Injector wiring looks good. Thanks again
 
  #35  
Old 04-06-2004, 12:44 PM
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replaced the fuel pressure regulator and the stator (pick-up coil) now it is runnung good Thanks for all the help This is an A+++++ forum!! Thanks Again to all that has helped!! I am jumping with joy!!
 
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