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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

operating temps reached then cuts off

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Old Sep 1, 2010 | 07:29 PM
  #1  
montrese04's Avatar
montrese04
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operating temps reached then cuts off

my dad has a 91 xlt lariat with 4.9 inline 6 300cid

issue is the car starts but will shut off when operating temps are reached.

(the following is just extra literature)
he just rebuilt the motor with some type of radical camshaft and some type of after market headers.
He had to take the engine back out cuz the machine shop that shaved his crank didnt give him the correct bearings. so the engine was pinging and he didnt have a oil pressure read
 
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Old Sep 2, 2010 | 01:32 AM
  #2  
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polarismuddman
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The camshaft might be the issue....if the truck is computer controlled and he installed a cam that is not computer friendly he made an Uh oh.
 
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Old Sep 2, 2010 | 10:50 AM
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montrese04
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so how would he know if he has a computer controlled vehicle it's a 91 f150 xlt lariat 5speed with 4.9l inline 6 300cid
 
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Old Sep 2, 2010 | 12:59 PM
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polarismuddman
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Anything EFI-based is computer controlled....or depending on what he changed....
 
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