Car not blowing hot air

Asked by Nikolai Mar 02, 2016 at 08:23 AM about the 2004 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

My 2004 Jeep cherokee  larado  is not heating up
the inside u til the temp gets up to 220 and when I
stop at a light the hot air goes warm and cold then
back to warm ....I noticed on my way home today it
was running hotter than normal between 220 to
240 then drop back under 220 for a little bit then
go back up ....What is going on.?

7 Answers
65,590

firebird338 answered 8 years ago

The first thing you should check is the anti freeze level. Add anti freeze if low.

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70

Aoneal2 answered 8 years ago

My guess would center on the Blend door located under the dash. They fail in one position or the other... Common prob in several makes including Jeep... About 1K at the dealer... Do not attempt on your own...

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Nikolai answered 8 years ago

Thanks all it was low anti freeze I bought a gallon and it almost took all of it temp is back to normal and heater kicking out again....I glad it was a easy fix just love to know what happened to the antifreeze I put in there 3 weeks ago...

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65,590

firebird338 answered 8 years ago

You should keep a eye on the level may have a small leak some where in the cooling system. Had a vehicle with same problem had to add anti freeze every 3-4 weeks could not figure out where the leak was but added some alumi seal stop leak. Had to remove top radiator hose and add stop leak into hose because no cap on radiator could have added stop leak in over flow tank but have taken longer for stop leak to work and it did take care of my problem.

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firebird338 answered 8 years ago

The mistake people make with stop leaks are if it does not stop the leak the first time they continue to add more hoping it will work that is when it can clog up the cooling system. So if you do decide to try it do not try more then two times any more after that you are asking for trouble but it is worth a try.

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