Question about 1988 Jeep Grand Wagoneer
This year jeep has 2 different water pump OPTIONS. You need the reverse pump, take the pump back that you purchased and have them look in the computer again. There is another pump available that is identical but it is set up to push the water the way it needs to flow. It has REV stamped on the metal casting. This will HANDLE IT! Good luck...
Posted on Jun 03, 2010
Several things can contribute to overheating. If the vehicle doesn't overheat at idle but slowly begins to overheat at highway speeds then I would suspect a partially plugged radiator that just simply can't get rid of the extra heat generated at higher engine loads and speeds. The radiator could be plugged internally which would require it's removal and professional cleaning [or replacement] or it could be plugged externally with bugs, dirt, and other crud that is restricting the airflow through it which can usually be fixed by thoroughly cleaning both sides of the radiator with a garden hose. If, however, the engine runs at near normal temps at highway speeds but overheats at lower speeds then I would look at the radiator cooling fan operation. Once you are above about 35 mph there is sufficient air being rammed through the radiator to cool it but below this the cooling fan[s] need to work to limit how warm the coolant can get. A more rare cause could be a leaking head gasket which often will cause a random sudden overheat condition [often with a loss of heat from the heater during the event] that initially may come and go for several days or weeks before becoming severe. Make sure your cooling system is properly filled with a mix of 50/50 coolant and water and hasn't accidentally been filled with only 100% antifreeze and this too will cause odd heating problems.
Posted on May 15, 2010
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Posted on Jan 02, 2017
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