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?
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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