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Another HEATER Problem

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Old 01-23-2013, 07:57 PM
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Default Another HEATER Problem

ok so i know i can figure it out, but i want some other input. ok so here is my problem. jeep runs at normal temp, fluids toped off, bend door an motor work and flushed out the heater core. but it still blows little to no really heat. i thought about the resistor but the blower motor works fine, so im thinking it has somthing to do with the controller. let me know what yall think thanks
Old 01-23-2013, 08:37 PM
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How cold is it there? My heater when I am in Missouri in the winter doesn't work so hot. Have to block the grill to keep a little warm.
Old 01-23-2013, 09:02 PM
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if the blower motor is working but your heat isn't directional it is probably a vacuum issue. my jeep had the line to the vacuum ball open with no ball and it was making my cruise and directional heat non functional. plugged the hose and now it works barely, but i need the ball to make it really work.

if you have cruise and it isn't working either then that's definitely your problem.
Old 01-23-2013, 09:02 PM
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When the engine is running at normal temp, feel the two heater hoses. If one is hot and the other is noticeably cooler, your heater core is plugged.
Old 01-23-2013, 09:02 PM
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Thermo, maybe.. Verify its hitting 195? Are you sure heater core is good?
Old 01-23-2013, 09:33 PM
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Originally Posted by SuperXJ2000
ok so i know i can figure it out, but i want some other input. ok so here is my problem. jeep runs at normal temp, fluids toped off, bend door an motor work and flushed out the heater core. but it still blows little to no really heat. i thought about the resistor but the blower motor works fine, so im thinking it has somthing to do with the controller. let me know what yall think thanks
What color was the coolant? This happen all of a sudden or it has never had heat? If everything really functions, you will have heat no issues. After a while mine almost melts the rubber off my shoes if I don't turn down the temp and it was 2° this morning.

Last edited by Turbo X_J; 01-23-2013 at 09:35 PM.
Old 01-24-2013, 04:03 AM
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Originally Posted by belvedere
When the engine is running at normal temp, feel the two heater hoses. If one is hot and the other is noticeably cooler, your heater core is plugged.
well before i flushed it i tested the hoses to make sure on the temp of both lower one was somewhat cooler. But i flushed out the heater core yesterday.
Old 01-24-2013, 04:06 AM
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Originally Posted by Turbo X_J
What color was the coolant? This happen all of a sudden or it has never had heat? If everything really functions, you will have heat no issues. After a while mine almost melts the rubber off my shoes if I don't turn down the temp and it was 2° this morning.
Well the fluid could be changed. Since ive owned the jeep the heat has been like this and ive yet to change the coolant. I know with my other two XJs ive owned the heat was hottttttt.
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