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Old January 21st, 2013, 08:03 AM   #1
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05 Grand Cherokee over heating

My buddy has a 05 GC 3.7 v-6 taht over heats at highway speeds but cools off when city driving or heat is on plus stays cool when sitting in park.
He replaced the thermostat, radiator cap, radiator and water pump.
We did a leak down test on the cylinders no leaks its not losing antifreeze anywhere.
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Old January 23rd, 2013, 09:14 PM   #2
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check your hoses maybe one is clapsing when rpm are higher....worth a shot
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Old March 11th, 2013, 03:04 PM   #3
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same problem with 4.7v8

Hey buddy I was just wondering if you figured out the problem. I am dealing with the exact same thing as of last night after some hard off road.
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