Coolant getting hot and boiling/overflowing
05-03-2017, 03:22 PM
#1
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Location: Walnut Creek, CA
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Year: 1992
Model: Cherokee
Engine: 4.0 HO
Coolant getting hot and boiling/overflowing
My jeep on several occasions has had the coolant overflow out of the reservoir because it is getting too hot I'm guessing. It's pretty much boiled several times and just poured out. The times it happened were all after simple, shorter drives so I'm not pushing it hard. I don't know why its doing this. Maybe i should try a new type of coolant? Go get a coolant flush? I have no idea.
05-04-2017, 03:17 AM
#3
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Year: 1992
Model: Cherokee
Engine: 4.0 HO
05-04-2017, 04:28 AM
#4
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Year: 2000
Model: Cherokee (XJ)
I would start radiator cap. While I am not a fan at throwing parts at something to try and fix it they are relatively cheap and quick to do. Same thing happened to me in my '00. Replaced it and been fine since.
05-04-2017, 07:33 AM
#5
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Year: 1996
Model: Cherokee(XJ)
Engine: 4.0
I recently had a similar experience, in which a 10 minute drive to work would cause my coolant to overflow. I took it to my mechanic and it was diagnosed as a faulty water pump. It was replaced and the problem hasn't happened again. It had to side effect of also eliminating an in-town overheating problem that I had been having since acquiring the Jeep a year prior. At the time, the water pump had 65k miles on it. ymmv
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