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Cooling fan I just replaced the thermostat, water pump, a pulley, ac hose. Car still running hot possibly due to fan cutting on and off

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1 Answer

Can't guess at what the issue may be
When you say still running hot, i assume
the shop failed to diagnose & make the proper
repair & you don't care to go back there,so on to
the next shop

Posted on Jul 09, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

davidkay61
  • 23 Answers

SOURCE: running hot

Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Posted on Dec 01, 2008

ourhowse
  • 2007 Answers

SOURCE: 1997 eldorado still runs hot

Are you sure it's not air locked? Run it with the rad cap off and keep watching the water level. It might go up and down and then finally drop. Maybe even try letting some air out of one of your heater hoses if you can.

Posted on May 06, 2009

SOURCE: 1999 Alero: I replace the head gaskets thermostat water pump n...

OK you have done the engine side of things. If you have an electric radiator cooling fan make sure it comes on when radiator is hot, if not the fan motor is caned or the thermostat switch is faulty. Sometimes the fan motor is supplied by a fused/relayed circuit in which case these items will also need to be checked. Check that not only does the top hose from the engine to radiator get hot but that the bottom one does too. If not this would indicate a blockage perhaps in the radiator core due to sludge. If full of sludge give both ends a flush out with a high pressure hose. Like wise do the same with the bottom hose back to the pump. If the water is circulating and the radiator fan is working then the normal cooling system is working as it should. f the engine is running hot one last thing is to find the EGR valve and check that it is opening as it should. If not the combustion temperatures go very high. One indicator of a hot engine is blue/glazed spark plugs so take one out and check it for signs of hot running. If hot then look to clean the EGR valve and associated exhaust gas feeder pipe with frayed cable, cloth and and carb cleaner spray.

Posted on May 05, 2010

Biggdex35
  • 333 Answers

SOURCE: my car is running hot. we changed the thermostat a...

Radiator stopped up.

Posted on Nov 23, 2010

dttech
  • 4803 Answers

SOURCE: electric fans comes on and

Your vehicle is equipped with two cooling fans. There are also two cooling fan relays. One relay turns the fans on low speed the other turns them on high speed. They should BOTH be running anytime the A/C is on and the A/C compressor is engaged. If they do not, then there is a problem with your fan circuits, fan relays, The wiring to the fans, A/C request data going to the Powertrain Control Module (PCM), or the relay control circuit between the PCM and the fan relays.

The only way to properly diagnose this problem is with a scanner that is able to command the HIGH and LOW fan relays on and off so the ciruits and fan motor operation can be verified.

Posted on Aug 27, 2011

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Water Pump leaks from the front end of the Wagon.


follow this steps and fix it. God bless you
  1. Determine the Reason for Water Pump Failure
    • 1 Repair a water pump by checking your car for a failure in the bearings. You can test for bearing failure by seeing if there is any play in the shaft that is connected to the electrical fan blades, as well as the drive pulley to the pump itself.
    • 2 If you notice any free play in the shaft or the pulley, you will need to take the pump apart and replace the bearings.


    • 3 Determine if the water pump failure is due to a leak in the casing. Examine the water pump housing for leaking or water stains in the drainage hole next to the pulley.
    • 4 If water is dripping from this hole, then the seals inside the pump need to replaced in order to repair the pump.
    Remove the Water Pump for Repair
    • 5 Allow the engine to cool completely before removing any part of the cooling system. Never open a radiator cap or plug while the engine is still warm.
    • 6 Disconnect the car battery. This will prevent the electrical fan from turning on while you are under the hood.
    • 7 Drain the radiator of all fluid and disconnect the radiator hoses. Collect the fluid with a plastic container and keep it in a safe place until you are ready to put it back into the radiator.
    • 8 Remove the fan assembly. This will include the shroud, the fan and the fan belt. Disconnect the electrical leads for the fan.
    • 9 Remove the pulley for the fan belt as well in order to have access to the water pump.
    • 10 Use a socket set to remove the water pump from its engine mount.
    • 11 Open the housing for the water pump and replace the seals or bearing as necessary. Some auto parts stores carry repair kits that have both the seals and bearings for specific types of water pumps.
    • 12 Reassemble the cooling system by replacing the water pump, pulley, fan belt, fan assembly and radiator hoses. Refill the radiator with the fluid.
    • 13 Start the engine to see if the water pump repair was successful. Check for leaks before you take the car out on the road.

Oct 18, 2012 | Cars & Trucks

1 Answer

Car is running hot after thermostat replacement; also recently replaced radiator


If the car is still running hot after replacing the thermostat, then there are a few issues that you need to check. Is all the air bled out of the cooling system? Do you have a leak somewhere? Is the top hose and bottom hose both getting hot? Is the temp sensor working correctly (meaning the sensor says that your car is in the red, but really your car is not overheating at all). Is the cooling fan turning on? It has to be one of those that is causing the issue with the car overheating. Most of the time, its due to not bleeding the air out of the system, or the water pump not functioning correctly.

Oct 04, 2011 | 1991 Nissan 240SX

1 Answer

2002 Jetta 1.8T blew 40A cooling fan fuse - overheated, destroyed 4 way cooling hose connector - replaced all- now it still runs very hot, inside temp reads 190 (but temp is much higher), cooling fans run...


Then replace the thermostat, because if on lower hose not hot and on upper hose scalding hot = antifreeze flow blocked by the thermostat wich remains closed!!!

Thermostat replacing:


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Aug 27, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

Does your air compressor cause your car to run hot?


It shouldn't but it can. Have the cars cooling system checked out.
This should include a pressure test for leaks, a/c cooling fan operationas well as water pump for leakage via weep hole or looseness of its pulley, thermostat and radiator operation as well as the condition of all hoses (incuding heater hoses)

Jul 20, 2010 | 2001 Ford Mustang

1 Answer

1999 Alero: I replace the head gaskets thermostat water pump n...


OK you have done the engine side of things. If you have an electric radiator cooling fan make sure it comes on when radiator is hot, if not the fan motor is caned or the thermostat switch is faulty. Sometimes the fan motor is supplied by a fused/relayed circuit in which case these items will also need to be checked. Check that not only does the top hose from the engine to radiator get hot but that the bottom one does too. If not this would indicate a blockage perhaps in the radiator core due to sludge. If full of sludge give both ends a flush out with a high pressure hose. Like wise do the same with the bottom hose back to the pump. If the water is circulating and the radiator fan is working then the normal cooling system is working as it should. f the engine is running hot one last thing is to find the EGR valve and check that it is opening as it should. If not the combustion temperatures go very high. One indicator of a hot engine is blue/glazed spark plugs so take one out and check it for signs of hot running. If hot then look to clean the EGR valve and associated exhaust gas feeder pipe with frayed cable, cloth and and carb cleaner spray.

May 05, 2010 | 1999 Oldsmobile Alero

2 Answers

The engine is overheating. Removed the thermostat, radiator fans not kicking in, noticed collant leaking from were the water pump is located.


If the water pump is leaking, then you need to replace it, replace the thermostat as well. Make sure you have got all the air out of the cooling system, when you refill the coolant, by undoing the top hose of the radiator till water comes out, likewise with a heater hose, then start and check, when the temperature is right the fans should cut in, keep an eye on the temp guage whilst doing this.
Hope thgis helps

Nov 02, 2009 | 2004 Chrysler Pacifica

2 Answers

Car runs hot while idling, then cools down when you start driving. Have to add antifreeze but cant tell where it is leaking. could it be a heater valve busted or is it possibly the water pump?


It`s easy to see if the water pump is working just drain some of the fluid out of the radiator and look inside while vehicle is running NOTE due this only when vehicle is cold.
Know if it`s not flowing after it starts to warm up then either the thermostat is stuck closed or the water pump is bad i would start with the thermostat if i where you the other job is a lot harder and more expensive
Also the fluid disappearance could be caused by the fluid boiling out when it gets hot one last note check pressure cap on radiator for wear or cracks if bad replace hope this helped you.

Sep 10, 2009 | 2001 Jeep Cherokee

5 Answers

Overheating 1992 acra integra


The coolant temp sensor tells the computer tempurature of engine at all times.It tells the coolant fans to come on,and also very important,when to cut off.If the fans don`t go off by them selfs,then temp is not going down.Now this is if the ac is off,cooling fans come on any time ac is turned on,so check for fans coming on and off with ac off.A bad coolant sensor would cause the fans not ot come on,but not to cut off nessasaralyCoolant systems must be bled of air trapped in systemfor the engine to be cooled .If air is in the system,the coolant won`t flow correctly.

Aug 07, 2009 | 1992 Acura Integra Hatchback

3 Answers

Son and I replaced the radiator.son drove the car and it peged the temp gauge,he drove it home about a mile and a half.the next day I found that a hose was never tightend. Secured and filled,now the temp...


The thermostat has either failed shut or you failed to remove a transit blanking plug in the radiator before you fitted it

Remove the thermostat cover and take it out

You can run the car without a thermostat as their prime reason for being there is to warm the engine up quickly when the car first starts

Jul 03, 2009 | 2001 Buick Century

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