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A short while after I replaced my fan clutch and.

Tiny
RYANREESE
  • MEMBER
  • 1994 FORD RANGER
  • 160,000 MILES
A short while after I replaced my fan clutch and water pump my thermostat would go from cold to normal while driving. I have replaced the thermostat twice. What else could it be?
Saturday, March 2nd, 2013 AT 8:18 PM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Sounds normal. What is your concern?

Roy
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Saturday, March 2nd, 2013 AT 8:19 PM
Tiny
RYANREESE
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It goes back and forth from cold to normal about every minute
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Saturday, March 2nd, 2013 AT 8:36 PM
Tiny
ASEMASTER6371
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Ok, thats new information.

Did it overheat before you changed the thermostat? If it did, you may have damaged the head gaskets and what you see is air in the system.

Roy
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Saturday, March 2nd, 2013 AT 8:38 PM
Tiny
RYANREESE
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No, I noticed water coming out weep hole of water pump but I never lost fluid or overheated.
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Saturday, March 2nd, 2013 AT 8:43 PM
Tiny
ASEMASTER6371
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Ok, make sure there is no air in the system, what temp thermostat did you use?

Roy
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Saturday, March 2nd, 2013 AT 9:00 PM
Tiny
RYANREESE
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195
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Saturday, March 2nd, 2013 AT 9:05 PM
Tiny
ASEMASTER6371
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Just sounds like an air block.

Roy
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Saturday, March 2nd, 2013 AT 9:07 PM

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