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1997 Ford F-250 temperature gauge fluctuation

Tiny
ROMANO97
  • MEMBER
  • 1997 FORD F-250
  • 280,000 MILES
I havechanged everything possible on the coolant sysytem to cure this and the gauge still goes high when I puch the gas hard and then low when I let off and then the coolant pukes out. The truck has a 460 big block engine.
Thursday, July 4th, 2013 AT 12:06 PM

4 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
So radiator, water pump, thermostat, hoses fan clutch block flushed all that done? If yes NAPA has a block tester to see if exhaust is present in coolant.
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Thursday, July 4th, 2013 AT 12:19 PM
Tiny
ROMANO97
  • MEMBER
  • 3 POSTS
Havealso changed head and intake gasket and all that you said
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Thursday, July 4th, 2013 AT 12:23 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
So if drive around town traffic no overheat? AC on no overheat? Only overheat when hard accelerated? If yes to all three maybe gettting lean fuel suppose no check engine light? Clean MAF with a MAF cleaner truck has TSB on lean overheat due to contaminated MAF
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+1
Thursday, July 4th, 2013 AT 12:45 PM
Tiny
ROMANO97
  • MEMBER
  • 3 POSTS
It only overheats when you pull something or run it hard
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Thursday, July 4th, 2013 AT 12:53 PM

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