Question about 2004 Jeep Grand Cherokee
I have replaced all 4 o2 sen. plugs twice and thermostat 3 times now in my o4 grand cherokee 4.0L it still comes back with he same old codes and after a while the eng wont get up to temp like it should i have also replaced the coolent temp sen. as well still had the same problem coming back again fans are not staying on . and back to the poor gas mil. front 3 plugs look good when i change them back 3 are bad. is it internal on the eng. or is the ecm bad ? LOOKING FOR HELP
Run the car with the radiator cap off. Make sure the radiator is topped
off with coolant or water will do just fine. While the car is running
look in the radiator neck and check if there are bubbles coming out.
Maybe bad head gasket.
Posted on Oct 31, 2008
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Posted on Jan 02, 2017
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