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2001 jimmy overheated now running rough. We have now changed the plugs wires cap rotor water pump thermostat and temperature sensor. Still running real rough low rps and the check engine light?
Wiki User
∙ 15y ago
Same exact problem. I'm NOT a mechanic. No fluids due to a intake manifold gasket. Replaced. Began running rough, bucking, low rpm's. Replaced 2 sensors. No help. Had to replace motor. Water in oil. The head either cracked or the warped, therefore leaking water into the oil. Once the oil pan becomes full of water and oil, this created too much pressure for the pistons to move in the cylenders properly. When this happens water will also go into the cylenders on top of the pistons and will not let the plugs fire properly. You should have smelled coolent in the exhaust. A head can be removed and fixed if it wasn't cracked too bad or warped too much. Depending on the type of motor, this could cost as much as a new replacement motor. Or depending on the auto shop might have been a lot cheaper than a new motor.
Wiki User
∙ 15y ago
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When 1990 Honda is running cooling fan does not come on but comes on when shut off thermostat and temperature switch changed?
When 1990 Honda is running cooling fan does not come on but comes on when engine is off and I thermostat and temperature switch changed?"
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