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<blockquote data-quote="Benhoward384" data-source="post: 1461463" data-attributes="member: 19825"><p>My heater was working fine on my 97 ZJ 5.2, I did a complete coolant flush on the engine yesterday and now I'm not getting hot air. I spliced into the heater inlet hose with a flushing tee and flushed the system that way. I have no leaks anywhere. I will get hot air for a second then it cools down and if I turn the nob to cold air it defintely blows cold and if I turn it back to heat I can feel the temperature change but it's defintely not blowing hot and the truck is getting up to temp. Also if I sit there and rev the thing real high I will get hotter air but at idle or driving around unless I'm at high rpm's the thing blows cold. I'm stumped.</p></blockquote><p></p>
[QUOTE="Benhoward384, post: 1461463, member: 19825"] My heater was working fine on my 97 ZJ 5.2, I did a complete coolant flush on the engine yesterday and now I'm not getting hot air. I spliced into the heater inlet hose with a flushing tee and flushed the system that way. I have no leaks anywhere. I will get hot air for a second then it cools down and if I turn the nob to cold air it defintely blows cold and if I turn it back to heat I can feel the temperature change but it's defintely not blowing hot and the truck is getting up to temp. Also if I sit there and rev the thing real high I will get hotter air but at idle or driving around unless I'm at high rpm's the thing blows cold. I'm stumped. [/QUOTE]
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