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1986 Other Ford Models overheating when airconditioning is o

Tiny
ROGERFRIEDMAN
  • MEMBER
  • 1986 FORD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
My Ford ranger over heats when the air conditioning
is on. I have installed a new water pump, and thermostat.
Sunday, October 3rd, 2010 AT 9:36 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
When it gets hot with the air on, turn the truck off and check the radiator for cold spots. If the radiator is not the same temp all the way accross or all over, then you'll need a new radiator. If you have electric fans on the back side of the rad, make sure they are disconnected so as not to hurt your hand.
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Sunday, October 24th, 2010 AT 2:45 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
I agree with hmac300. Also check between the radiator and a/c condensor in front of the radiator for any build up of leaves or pine needles if the truck has sat under a tree for any length of time. It happened to me. Truck was fine until I turned the a/c on The leaves caused a partial blockage of air cooling the radiator.
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Tuesday, October 26th, 2010 AT 12:32 PM

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