1987 Jeep Cherokee laredo 6-cylinder with a coolant problem

Tiny
ZEROBECK1982
  • MEMBER
  • 1987 JEEP CHEROKEE
My 1987 jeep cherokee laredo, 6 cylinder, 4x4, with 144,000 miles has a problem with the coolant. I have replaced the radiator, the radiator cap, the hoses, the thermostat, and the coolant resevoir and the problem still persists. My coolant is boiling. I don't know why. I've replaced the coolant reservoir 3 times because when I start my jeep up and run it for more than 30 mins. My coolant starts to boil and when I shut the jeep down, the coolant comes bursting out of the reservoir like a hydrant. I would appreciate the help if you have any ideal how to help.
Thursday, April 5th, 2007 AT 2:03 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
See any ciculation? Could be the thermostat was installed wrong, The spring should point to the engine. The impeller fins are gone on the pump, Or the cooling fan is not working. See any white smoke from the tailpipe?
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Thursday, April 5th, 2007 AT 3:07 PM
Tiny
ZEROBECK1982
  • MEMBER
  • 2 POSTS
I had the thermostat installed by the jeep dealership so it should be installed correctly, I was told about the thermostat before that is why I didn't install it personally. And about the white smoke, there is none. Thank you for your reply though.
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Thursday, April 5th, 2007 AT 5:38 PM

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