Heater blowing cold when Jeep is stopped

bighause · **Posted:** Mon Oct 12, 2009 10:21 am

When my Jeep is moving, the heat works fine and blows hot air. When I stop at a stoplight and sit for a while, I can feel the air getting gradually cooler like I switched it over to cool air. As soon as I get moving again it switches back to hot air.

With it stopped and in neutral with the engine revved up it still blows cold air and when moving if I put it in neutral and let the engine idle and the Jeep coast it stays blowing hot air.

Any ideas on what could be the cause?

Jeepjeepster · **Posted:** Mon Oct 12, 2009 10:30 am

yup..

http://www.lostjeeps.com/forum/phpBB3/vie ... hp?t=47017

bighause · **Posted:** Mon Oct 12, 2009 10:45 am

Sounds like I should check the coolant level. Thanks!

bighause · **Posted:** Mon Oct 12, 2009 12:09 pm

Wow, it was almost a gallon low on coolant. Thanks for the quick reply, the heat works again.

Now to find out where the coolant is leaking from...

Jeepjeepster · **Posted:** Mon Oct 12, 2009 1:24 pm

No problem.

Check the sides of the radiator really good. Those plastic end caps are bad for cracking and leaking.

Water pump is also a good thing to check.

Heater blowing cold when Jeep is stopped

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