Question about 1997 Nissan Maxima
The thermostat is behind the upper radiator hose...remove the upper radiator hose and loosen and then remove the two bolts on the outlet (where the upper radiator hose ends) The thermostat is inside that outlet...Another thing to check is if there is water in the oil...If there is water in the oil then it could have a head gasket problem..Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.
Posted on Apr 18, 2009
The top radiator hose is connected to the thermostat housing, bolted to your engine. It's an easy enough job and isn't expensive. Make sure you get a gasket with your new thermostat.
I hope this solves your problem. Good luck!
Posted on Aug 28, 2009
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Posted on Jan 02, 2017
I have 2002 Nissan ser with 120k, and I noticed a different temperature change when I start my car up...it takes a while to get warm. The weather has been cold lately, but my car has quick jolt as I'm driving until the car warms up. What is this issues I'm having...?????
Posted on Nov 16, 2011
The thermostat is located near the back left of the engine if you are looking in with your hood open. It is inconveniently located next to several other hoses and wires. Your best bet is a racheting screwdriver with a 10mm socket. It is accessible from the top side. If you replace the thermostat and you experience over heating, it is most likely just air trapped in the housing. Run your car and warm it up, let it cool down, open radiator cap and add coolant. Repeat a few times and that should purge the air.
Posted on Jan 10, 2012
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