Question about 1998 Ford F150 Regular Cab

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The heat in my 1992 Jeep Wangler is not working.

I have replaced all the hoses, thermostat, and radiator cap. I flushed the system, and I know the heater core isn't plugged. The Jeep isn't overheating, just won't blow hot air inside the cabin. Thanks... coolant probles the heater blows hot & then it will blow cold air changed thermostat&flushed rad.&changed the cts .No visble coolant leaks.think it might be air locked.

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The only reason it won't blow hot air is because the water is not getting to the heater core. Check to see if you have a heater control valve in one of the two lines to the heater core. If so check to be sure that is is opening and closing. If it won't open then you get no water flow in to the heater core.

Posted on Feb 07, 2009

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1 Answer

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1 Answer

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2 Answers

The heat in my 1992 Jeep Wangler is not working.


Hi!
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Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
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If persistent boil ups/over attention must made in the cylinder head
or gasket area, or possibly water pump?
Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K.

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3 Answers

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