Well all fingers point to head gasket!!!!
#1
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Year: 1995
Model: Cherokee
Engine: 4.0
Well all fingers point to head gasket!!!!
I have replaced radiator, thermostat, lower radiator hose with spring in it, temp sending unit, temp sensor, tested aux fan new water pump. Aux fan will not come on unless you unplug temp sensor, and i can not get the air bubbles to stop coming up through radiator. 95 cherokee sport 207,xxx miles. Is there anything i may be over looking?
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Year: 1999
Model: Cherokee
Engine: 4.0
In the 91-01, the system usually does a good job of purging air within about 3 complete heat up and cool down cycles.
A compression test is never a bad idea. For the 4.0, you are looking for 120-150 psi, with no more than a 30 psi variation between cylinders.
A compression test is never a bad idea. For the 4.0, you are looking for 120-150 psi, with no more than a 30 psi variation between cylinders.
Last edited by tjwalker; 07-24-2011 at 12:22 PM.
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Year: 1992
Model: Cherokee
Engine: 4.0 I6 firepower ignition, cat-back w/ magnaflow muffler, poweraid tb spacer, optima blue top
Check the oil, if you have a bad head or gasket it will probably show up in the oil. Any white smoke coming from exhaust, another sign of head problems. Do the compression to be sure. Is it overheating or just the bubbles?
#10
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Testing it is the only way to know for sure, but oil in the coolant and coolant in the oil is also another way to check. And burning through oil is also a major sign. The last head gasket I know of that went, made the vehicle burn through oil like it was going out of style.
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