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Old 07-28-2011, 08:38 PM   #1
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normal temp boil over

ok my temp gauge is sits right at 210 never goes higher but when i stop and shut down i can hear it boiling over into the overflow tank
is my temp sensor wrong, radiator cap shot ?
or is this normal

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Old 07-29-2011, 06:09 AM   #2
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Originally Posted by Handcannon44 View Post
ok my temp gauge is sits right at 210 never goes higher but when i stop and shut down i can hear it boiling over into the overflow tank
is my temp sensor wrong, radiator cap shot ?
or is this normal
As long as it isn't overflowing out of the expansion tank you should be fine, that's why it's there. If the radiator cap is over 10 years old I would replace it anyway. Make sure the replacement is the correct psi.

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Old 07-29-2011, 10:40 AM   #3
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It's the radiator cap. Only had mine for 2 weeks and drove to meet friends 4 hours away to show it off, and had the same problem. Replaced the cap an "No Mas"!
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Old 07-29-2011, 12:58 PM   #4
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A lot of people don't realize that something so small can do a lot for a vehicle, the radiator cap raises the pressure in the radiator which will also raise the boiling point of the coolant. glad u fixed that problem before something worst happens to your jeep, like blow head gasket.
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Old 07-29-2011, 07:49 PM   #5
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cool thanx for the insight my cap says 16 pounds is that the right one
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Old 07-29-2011, 07:51 PM   #6
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I would also flush the coolant if it has not been done in awhile along with a new cap. Make sure everything is in good condition to prevent boiling over as being stranded is no fun.
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Old 07-29-2011, 07:56 PM   #7
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I believe that every lb of pressure the cap has it adds 3 degrees to the boiling point of the coolant.
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Old 07-29-2011, 11:02 PM   #8
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Flush the coolant, run some radiator flush then drain, refill with fresh fluid then put a new radiator cap on.

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