occasional antifreeze smell
#1
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Year: 1990
Model: Cherokee
Engine: 4.0
occasional antifreeze smell
I get an occasional antifreeze smell when I'm driving, Checked for possible head gasket problem, nothing, looked for leaking fluid around the engine and heater core, nothing, no leaks. WTF?
#4
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Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
Sometimes when the heater core starts to leak, you will get atomized coolant through the heater vents before it actually starts leaking liquid coolant. Are you smeeling it with the heat on/off/or both?
#6
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Year: Sold my 1991 to go to school for 2 years.
Model: Cherokee
Engine: 4.0L
#7
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
If it leaks it will fog the windows with an oily film over time. You might put a newspaper down in the passenger floorboard and see if anything leaks on it after a couple of days.
If the coolant smell only comes from the outside, then see my post above.
If the coolant smell only comes from the outside, then see my post above.
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#8
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Year: 2015, 2012
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Engine: 3.6L
After smelling an antifreeze odor around my '87 for several months, the coolant reservoir (football) split open from an apparent hidden crack. I barely made it home.
#9
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Year: Sold my 1991 to go to school for 2 years.
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Engine: 4.0L
As for the OP's problem, pressure test the cooling system just to be sure there are no leaks but it is probably just the overflow venting pressure. Keep an eye on it for sure though.
#10
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Year: 1991
Model: Cherokee
Engine: 4.0 High Output
Antifreeze smell
I have a 91' 4.0. I have had it for about 10 years now.. I would occasionally have that smell.. it ended up being the heater core switching valve, it is vacuum actuated and when it would turn on a little fluid was leaking from the actuator arm on the outside.. cost about $8.00 and took about 10 min to replace. Hope this helps.
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