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Dead in the water !!

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Old Jul 24, 2006 | 09:22 AM
  #1  
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Dead in the water !!

Hi all ,
i have a 1988 f-150 4x4 w/300 6 cylinder
while driving ,motor just shut down, i still have all the dash electronics.
and it cranks over . i have plenty of fuel and it still wont start.the motor was warm ( i mean i have been driving for about 20 min), oh and about a week ago it did the same thing only that time i was able to coast it and pop the clutch and it started. but not this time .any help would be appreciated.
 
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Old Jul 24, 2006 | 09:59 AM
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pull codes (www.fordfuelinjection.com) may also be tfi module, when they get hot they will fail and not allow the rig to start
 
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Old Jul 24, 2006 | 11:33 AM
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Sounds like the TFI module.
 
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Old Jul 24, 2006 | 12:48 PM
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When you turn the key to run, do you hear the fuel pump/s

As mentioned, could be a bad TFI. Got spark?
 
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Old Jul 24, 2006 | 12:55 PM
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Not sure if you have dual tanks or not...but could be a fuel pump problem. You'd have to check the fuel pressure at the valve on the fuel rail.
 
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Old Jul 24, 2006 | 02:28 PM
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thanx for the info everyone , it does have two tanks,i just replaced the filter and the fuel relay , still no fix , i will try the TFI next,, i dont have access to a code reader right now the truck is stuck in a parking lot,how would i test the pump and would it be the pump that is on the frane rail?
 
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Old Jul 24, 2006 | 02:57 PM
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spray some ether into throttle, if it starts and dies, then it is fuel pump.

if not tfi is the next best bet.
 
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Old Jul 24, 2006 | 02:59 PM
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hey thanx again it does want to start with ether, should i replace the pump that is on the frame rail, or the one in one of the tanks?
 
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Old Jul 24, 2006 | 03:11 PM
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the one on the frame rail is the high pressure one, the one in the tank is low pressure.

probably the high pressure pump is bad.
 
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Old Jul 24, 2006 | 03:25 PM
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thanx on my way to the parts store !
 
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Old Jul 24, 2006 | 03:46 PM
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Don't need a code reader, those are typically used on OBD-II applications...this truck is not OBD-II.

If you follow the link given above it will provide instructions on how to check for computer codes. It will blink the code through the check engine light.
 
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