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What is the cause of my 1982 BMW 320i running hot. Everything is new from the water pump, radiator is not clog, fan is working properly, and there is no leak.

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Have you check the THERMOSTAT VALVE?

Posted on Nov 09, 2010

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6 Answers

Sometimes my car will start to run hot and then it will run ok checked for water it was good cant see or find any leaks. Do you think the radiator might be clogged?


could be or the thermostat getting stuck check your cool in fan motor too and sensor it all works in conjunction any if the radiotor is bad you should replace the thermostat .good luck.hugos1915 @live.com.

Apr 18, 2015 | 2002 Pontiac Grand Am

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2007 nissan exterra overheats


Hi Kim,

I can feel your frustration. It sounds like you've done all the logical stuff already. The "donut hole" in your process would seem to be not changing the water pump. The water pump as you might imagine, is responsible for circulating (pumping) the relatively cool water in the radiator into the running engine that contains the hot water. Hoses connect the two together. A thermostat is between the radiator and the engine. Once the water in the running engine gets to a certain temperature, the thermostat opens allowing the water pump to send cool water into the engine and hot water out to the radiator to be cooled. The heater core is usually on the passenger side firewall area.

It sounds like the water pump is the only thing left to change - if it isn't working - it can't circulate the water - and will result in overheating. Lastly, a clogged heater core shouldn't cause the engine to overheat - in fact, if the engine begins to overheat, you should turn the heat to HIGH fan and HIGH temperature to help remove some of the heat in the coolant.

Good luck!

Apr 11, 2014 | 2007 Nissan Xterra Off Road

1 Answer

I have a 1994 chevy caprice classic. Put brand new radiator, water pump and thermostat even put new fan motors but it keeps running hot and water in the collant jug keeps bubbling after ive been driving...


CHECK WHETHER THE COOLANT IS PROPERLY CIRCULATING.ALSO CHECK WHETHER THE RADIATER PIPES ARE NOT CLOGGED.ITS ALWAYS BETTER TO USE DISTILLED WATER RATHER THAN NORMAL WATER WHILE MIXING IT WITH COOLANT. ALSO CHECK THE TEMPERATURE SWITCH ATTACHED TO THE RADIATER. A FAULTY RADIATOR CAN STOP THE FANS FROM COOLING.

Jul 05, 2013 | Cars & Trucks

2 Answers

Engine overheat and no heat


Maybe your radiator is clogged.

Mar 12, 2017 | 2001 Nissan Sentra

1 Answer

I have a 2004 BMW 320i M sport The windscreen washer sprays do not work, no noise, no water coming out. Anyone know how to fix?


I would recommend checking the washer pump unit on the washer reservoir. They have a tendency to clog up with algae or fail. You can also check for voltage to the washer pump while someone is activating it.

Feb 26, 2012 | 2004 BMW 320i

3 Answers

I have a 94 crown Vic I just put a thermostat in it how do u know if it thermostat bad cause it running hot now


If it was running hot before you replaced the thermostat and the new stat didn't help it, most likely you have another problem. First make sure you installed the new thermostat correctly and not upside down and make sure you have purged all the air out of the cooling system. Your radiator could be clogged and restricted, not allowing coolant to circulate. Your fan clutch could be faulty or the radiator fan is not working properly. You could have a bad head or head gasket causing combustion gases to enter the cooling system. The water pump impeller shaft could have broke---These are the most common causes for an overheating problem. Good luck, i hope this helps.

Jul 11, 2011 | 1994 Ford Crown Victoria

2 Answers

Engine over heating


You may need to replace your gaskets and seals now. also, get your block checked to make sure its okay...

Jun 03, 2009 | 1996 BMW 318

2 Answers

BMW overheating


many things could cause the overheating. broken water pump impeller, stuck thermostat, clogged radiator, inoperative cooling fan on the radiator.

i would first check to see if the cooling fan on the radiator is working. when it reaches operating temp (or surpasses it in your case), see if the fan attached to the radiator kicks on. if its not on, then either the fan has failed or the temp relay to kick on the fan has failed. also, make sure the connector is plugged in.

after its at operating temp, turn off the car and feel the radiator. if you feel cool spots, then it is clogged and needs replacing.

wile under the hood and car is off, feel the upper & lower radiator hoses. if one is hot and the other is cool, then either the water pump (actually the impeller on it) has failed and is not circulating coolant through the radiator. a common problem in this model.

but it could also be the thermostat. if failed, it would not allow coolant to flow & circulate.

hopefull one of the above items is the problem. good luck.

Mar 07, 2009 | 1999 BMW 323 Series

2 Answers

Overheating


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.

Feb 25, 2009 | 1994 BMW 3 Series

2 Answers

Running hot


Check the Tension on the Belt. If it is not tight enough or you need a New Tensioner for the Belt, It will run hot. It is not letting the Water Pump Cool the Motor fast enough. You might also Check the Radiator. If the Radiator is Even a Little Clogged, It will overheat. Also, Check the Fan clutch, If it is not working Properly, You will overheat. Let me know what you find!

Jan 24, 2009 | 1996 Chevrolet Cavalier

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