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post #1 of (permalink) Old 01-26-2004, 05:52 PM
tonyl153
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Heater blowing hot and cold air

Help,
Heater is blowing hot air. However there is cold air blowing through as well. 88 YJ. Any sugestions.
Blower motor upgrade works great.
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post #2 of (permalink) Old 01-26-2004, 09:31 PM
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Re: Heater blowing hot and cold air

It's winter..... put the top and doors back on!

[img]images/graemlins/confused.gif[/img] What are you really asking?

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post #3 of (permalink) Old 01-26-2004, 09:52 PM
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Re: Heater blowing hot and cold air

The temperature is adjusted by a flap that diverts air through the heater core, around it or a mix. There is a seal on the end of the flap. If it has fallen off, it will alow air to go around the heater core.
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post #4 of (permalink) Old 01-26-2004, 09:55 PM
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Re: Heater blowing hot and cold air

Umm hot and cold? That would be warm air right?
well with the yj the big thing is where it gets the air from. new car/trucks get the air from outside or just reheat the air inside..
On the yj it heats the cold air from out side and when its like -5 it dont work to well..
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post #5 of (permalink) Old 01-28-2004, 12:08 PM
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Re: Heater blowing hot and cold air

This is an issue that I have mulled over a lot. I have a YJ, and I am not overly impressed with the heat. The only real thing that it does is to keep the windsheild somewhat clear of frost. I decided the best thing to do was to dress warm and live with it.
Well, then I got a CJ. And I thought the YJ heat was bad.... I am lucky enough that the inside of the windsheild stays just about the same temp as the outside of the windsheild. So I do not have to deal with frost. Cause I don't even think there is enough volume to even come close to keeping the windsheild clear.
So my solution to that is to dress really warm, and live with it for now. But I think next fall I am going to install a really heavy duty aux heater. There was a post here a while ago. It was something to do with adding heat to a CJ-5. Well I have decided that next year one, or both of my jeeps are getting one of these.
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post #6 of (permalink) Old 01-29-2004, 10:33 AM
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Re: Heater blowing hot and cold air

If you upgrade your blower motor and make sure the temperature flap seals so all the air goes through the heater core, you shouldn't have a problem with the heat. Those are the only two problems that need to be addressed. Do that and then see if you need more heat. Fix what you got first.
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