1990 Ford Bronco Coolant emptying

Tiny
SCOOTERBRACY
  • MEMBER
  • 1990 FORD BRONCO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
My Bronco recently began to overheat and the vent quit blowing warm air and began blowing cold air. I checked the coolant level, and it was ridicously low. I had checked it a few weeks back, and the level seemed fine.

I filled the radiator with coolant and the next time I drove it, the same thing happened all over again.

I'm not seeing any visible leaks anywhere, but that coolant has to be going somewhere. Any help?
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Thursday, December 11th, 2008 AT 3:23 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Test or Replace the thermostat-continues to overheat get it block and pressure tested-

If the block and pressure test passes check the following:, Pressure test the Rad. Cap, Clogged radiator, air lock in the cooling system, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.
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Thursday, December 11th, 2008 AT 4:58 AM
Tiny
TRAVIS650D
  • MEMBER
  • 8 POSTS
Don't forget to check your heater core. And freeze plugs. I would bet its just the heater core. It should be behind the glove box. Inside the "black plastic box" I call it the vent assembly.
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Saturday, January 17th, 2009 AT 11:26 AM

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