1999 Ford Ranger temperature

Tiny
NO1MEATMAN
  • MEMBER
  • 1999 FORD RANGER
  • 4 CYL
  • 2WD
  • MANUAL
  • 210,000 MILES
When I start up the truck it will get to normal temperature then if I turn on the heat it will decrease the temperature all the way to the 'c' on the dial and the air comes out no warmer then 70 degrees. Turn off the heat and it warms back up to running temperature.
Sunday, February 17th, 2008 AT 7:31 AM

3 Replies

Tiny
M8TRIX01
  • MEMBER
  • 36 POSTS
You probably have a stuck thermostat. When the truck is cold remove the radiator cap and then start the truck you will be checking to see if the coolant is circulating right off the bat. If you see the coolant mooving or circulating your stat is stuck open.
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Sunday, February 17th, 2008 AT 12:06 PM
Tiny
NO1MEATMAN
  • MEMBER
  • 2 POSTS
I looked at this and the coolent is not moving.

Thanks anyway. Anybody else want to try?
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Monday, February 18th, 2008 AT 7:08 AM
Tiny
M8TRIX01
  • MEMBER
  • 36 POSTS
With the truck off grab the cooling fan and try to turn it it should be just a little stiff but turn. If it doesn't then you have a bad fan clutch. The combined air flow plus the cold temp out side could be to much.
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Monday, February 18th, 2008 AT 3:56 PM

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