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Old 09-08-2012, 08:38 PM   #1
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Overheating issue...Trying to diagnose.

Been lurking these threads for a while and then bought my 01 wrangler tj.

Been having a great time with it up until today. So my first post here will be a sort of cry for help lol

Took it out wheeling yesterday, some light trails and water fording. Was just fine afterwards driving it back about an hour away. Drove it this morning a few miles and back no problem. Then finally I drove it up a few miles to buy something and when i get back in the car it doesnt start and is very hot. I let it cool off, and take it to a hand car wash and when i stop it billows steam from under the hood for a few minutes.

I let it cool off and wash off the mud and dirt and spray the radiator from the outside to clean it up, thinking it was clogged up. After its all clean, I pop the hood and notice the plastic piece on the top of the radiator has a large crack along the side. Uh oh.

I drive it slow slowly and notice a bit of steam each time I stop and the temps are stable at 210. Then as i approach one of the last intersections before home, I stall out in the turning lane while stopped. It starts billowing some smoke and the temps are at 260. Hit it into neutral and push it to the side with the help of another driver. Leave it there for a while to let it cool.
After the temp dropped, I turned on the heater to full, cranked it and drove home. I noticed the heater was blowing cold the whole way back.
Get home and turn it off and a few minutes later it wont start again. I didnt try again after that.

Sorry for the long explanation, but I hope from that i can get better advice.
I'm not really sure where to go from here. the fan clutch seems fine; the fan barely does a half spin before stopping when i turn it by hand.
The water pump may be the culprit but i'm not sure how to determine that.

Any advice would be appreciated as it is my daily driver and my only car.

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Old 09-08-2012, 08:43 PM   #2
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well the heater gets its heat from the coolant it sounds like one it could be thermostat,a clog in the radiator ,how much coolant do you have ?

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Old 09-08-2012, 09:05 PM   #3
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I have alot of coolant in the plastic tank. The radiator is pretty cleaned up from the outside. Could going through water yesdarday kill the pump?
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Old 09-08-2012, 09:41 PM   #4
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no not that ive ever heard , could be the pump im kinda leaning towards the thermostat id change it first its a lot cheeper
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