Question about 1996 Jeep Grand Cherokee

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Floor board leaks on passenger side and there hardly any heat, unless i rev the engine a bunch

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Very likely your heater core is leaking and that's why the floor is wet.
The reason you are having problems with the heat is that the coolant level has gotten lower than it is supposed to be which can and will eventually result in an engine overheat.
Unless you have lots of time and experience I don't recommend you attempt doing that job...entire dashboard need to come out to get to it.
Worst case, cut both heater hoses in front of the firewall and install about six inches of copper pipe as a bypass. You will have no heat but won't loose the engine either. You could try a sealer, but most won't work well in heater cores.

Posted on Feb 01, 2010

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Posted on Jan 02, 2017

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Unless the windshield has a leak but from your discription probably not. I hope this helps you AND
PLEASE RATE My ANSWER

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