jeep over heating need help bad -
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post #1 of 5 Old 08-03-2005, 10:23 PM Thread Starter
jeep jake
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Location: park ridge IL
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jeep over heating need help bad

My buddys jeep is over heating and we have replaced everything now. Originally we thought it was the thermostat, still over heated. Then we replaced the water pump cause it blew, it leaked everywhere. Then today we replaced the radiator after he brought it to a shop that was conviced it was the radator. We have blead the system, and it has new upper and lower hoses. The heat does not work. What could be causing this.

Please help

04 TJ 4.0 5-sp
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post #2 of 5 Old 08-04-2005, 08:41 AM
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is the upper hose getting hot? is the belt routed properly? is the pumps rotation correct? is the coolant flowing? is there air in the system?

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post #3 of 5 Old 08-04-2005, 10:57 AM
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Check your fan clutch. When the engine is hot it should be locked solid. If you can turn it by hand with a hot engine it needs to be replaced.

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post #4 of 5 Old 08-04-2005, 11:04 AM
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#1 Double check the belts

#2 Make SURE all of the air is out of the system!

#3 Make sure you put the thermostat in facing the correct way

#3 If the above do not fix it - and i really doubt this - try this - By pass the heater core with a short peice of hose (basically a "U") So where the coolant comes from the engine and goes into the firewall and heater core and comes back out of the heater core to return to the engine - we want to bypass the core all together.

Still i have a tough time imagining the issue is here - but the lack of heat is another indicator.

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post #5 of 5 Old 08-04-2005, 11:34 AM
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the lack of heat has me thinking air or possioble no coolant flow

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