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Posted on Jan 02, 2017
SOURCE: 2002 jeep cherokee laredo
My 98 Jeep Grand Cherokee had the same problem. Over heated when standing still. Took it to dealer and they could not find any problem with cooling fan. After doing my own investigation I found out that the electric cooling fan would begin to seize up after about 1hr. of operating. (gets hot)
The dealer would look at fan and see that it was running and think its ok. The problem is, it wasn't running fast enough.
I have a relay on the right side of front fender and jumped the fan to stay on with motor off. (must know what your doing). After about 1hr. fan started slowing way down. Returned it to dealer told them what the problem was. They were not smart enough to jump the relay so they put a couple hundred miles on it even though i told them it works OK when moving. Make sure you tell dealer to use the relay to jump.
Replace cooling fan motor. Works great
Posted on Feb 27, 2009
If you put the thermostat in correctly (spring towards the engine) that should be OK. Likely if the water pump wasn't leaking or had a bad bearing, you wasted your $ on that.
If you re-filled it and did not have the heater on high heat, you may have some trapped air in there. But, still overheating says another thing. If you have a blown head gasket, it can pump compression into the cooling system and drive the coolant from the core. It will also overheat. You can have that tested at most any decent shop that will do a hydrocarbon test to find that.I think someone makes a chemical test kit for that but not sure if it's very expensive or not. White smoke from tailpipe will also be an indicator as will be any coolant in the engine oil or coolant on one or more spark plugs. If it turns out that it has a head gasket problem don't stop looking for problems as often a faulty fan or obstructed radiator can cause the initial overheat that caused the gasket to fail.
Posted on Jan 16, 2010
Testimonial: "Thank you. I was hoping not to hear head gasket, but that's where it seems to be leaning towards."
SOURCE: 2002 jeep grand cherokee wont
first check fluid is full by starting the engine have it blocked put in in nutral( to fill the bell houseing ) then check fluid level, more than likely you need to add fluid exspecally if your checking it in park with engine on or off park gives you a false reading on the dip stick
Posted on Jul 31, 2011
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