3.6 Water pump???
12 JK 3.6L has an odd problem, the auxiliary fan is running much more than normal. It hasn't overheated yet... Coolant level is good. Everything seems normal...I did have an odd heat thing going on at the end of winter. It would start blowing cold if you say or ran low rpms then when you get back in the gas it would blow hot again....do I need a water pump or could it be something else?
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Originally Posted by Travis Jones
(Post 4344942)
12 JK 3.6L has an odd problem, the auxiliary fan is running much more than normal. It hasn't overheated yet... Coolant level is good. Everything seems normal...I did have an odd heat thing going on at the end of winter. It would start blowing cold if you say or ran low rpms then when you get back in the gas it would blow hot again....do I need a water pump or could it be something else?
Someone that experienced it may chime in , or you could search for 3.6 sand cast head issues your self . I do remember it being a problem on some threads here in the past . good luck . |
If your low on coolant or have a big air bubble it will have those symptoms, but it can also have those same symptoms if the impeller is coming apart and not circulating water well enough.
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Originally Posted by Travis Jones
(Post 4344942)
I did have an odd heat thing going on at the end of winter. It would start blowing cold if you say or ran low rpms then when you get back in the gas it would blow hot again.
Things should go back to working normal after that, but then you may have to determine what caused your coolant to be low in the first place. This typically needs a coolant system pressure tester. The most common source of leaks are the radiator and the thermostat housing in the 2012+ JKs. Likely not the water pump unless you notice leaking from around the water pump and/or hear abnormal noises coming from that water pump. |
Originally Posted by Travis Jones
(Post 4344942)
12 JK 3.6L has an odd problem, the auxiliary fan is running much more than normal. It hasn't overheated yet... Coolant level is good.
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