Question about Denso 1992 Toyota Celica GTS Sport 2.2L Remanufactured Alternator

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Radiator fan does not come on when hot

Fan does not come on when car runs hot

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If you short the Temp sensor will the fan run? if it does, then you need a new sensor. ( On radiator)

Posted on Jul 15, 2013

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My 2004 3400 closed system ,runs hot in town unless heater is on. driving up a mountain pass it gets very hot.on a flat highway runs normal. new t state,resivior cap, both fans work no leaks or smell


Radiator fan motor or radiator fan thermostat defective/

Also there is a relay that operates the fan motor

In town not enough air passing through radiator allowing it to over temp.. With heater fan running acts like cooling fan keeping engine cool

Highway driving ample air passing through radiator without fan.

Hill climbing requires cooling fan/

Hope this helps?

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Nov 17, 2016 | Cars & Trucks

2 Answers

Will a bad temp sensor make a car run hot


a temp sensor only monitors what the engine temp is it will not cause the engine to overheat or run hot. check to make sure the rad cooling fan is working if not it could be a bad fan motor, temp sensor for the computer to turn on the fan or a fan relay. there are 2 temp sensors on motors. one is for the gage or light the other is to tell the computer to turn on the cooling fan.

Aug 23, 2014 | Mercury Marauder Cars & Trucks

1 Answer

Car running hot when idle


The most common reason for running hot at idle is the radiator fan is not running or pulling enough air thru the radiator. If you have a fan for the engine and one for the ac, the engine fan may not be working.
The radiator fan should come on when the coolant reaches 220 degrees. The computer sends a signal to the fan relay.

May 15, 2013 | 2004 Buick Century

1 Answer

My car is running hot what could the problem be some say the radiator fan motor and some say the relay switch help


The computer turns on the relay to power the fan motor.
You would need to test the relay to see if it is powering the fan and check the ground circuit for the fan motor too.
Could be a faulty fan motor, relay, or wiring problem.

Aug 08, 2012 | 2004 Jeep Grand Cherokee

1 Answer

Fan comes on when switch ignition on instead of when hot Tazz


If the fan not turning on when car engine getting hot,then car will notice overheating.Click this link below for troubleshooting:---http://technoanswers.blogspot.in/2012/02/car-running-hot.html--------To know how engine cooling system works ,click the link below :----Engine cooling components working?

http://repairhelpcenter.blogspot.com/2011/11/engine-cooling-components-working.html

------------------
How does Vehicles Engine cooling system works? http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html
------------How to Replace Engine cooling Fan:-- http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-engine-cooling-fan-on.html
-----------Replace Fan Relay but still Radiator cooling fans not working? http://schematicsdiagram.blogspot.com/2011/12/replace-fan-relay-but-still-radiator.html
----------DIC says "COOLING FAN FAULT"? http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
---------Where Is Radiator Fan relay and Fuse Located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

--------

This will help.

Thanks.

Feb 09, 2012 | Cars & Trucks

1 Answer

Overheating water comeing out of bottol


REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.CHECK MECHANICAL COOLING FAN.SHOULD HAVE RESISTANCE WHEN TURN WITH HAND.IF FREEWHEELS FAN CLUTCH NEED TO BE REPLACED.CHECK TO MAKE SURE AUXILIARY ELECTRIC COOLING FAN RUNNING HOT WIRE COOLING FAN IF FAN RUNS.YOU HAVE FAULTY THERMO SWITCH LOCATED AT THE BOTTOM OF RADIATOR ON THE LEFT HAND SIDE ON 4 CYLINDER ENGINE FOR V6 ENGINE THERMO SWITCH LOCATED ON THE LOWER RADIATOR HOSE ON THE RIGHT HAND SIDE OF THE ENGINE COMPARTMENT. CHECK FOR BLOWN COOLANT FAN FUSE OR FAULTY RELAY.IF THE AUXILIARY ELECTRIC FAN DONT RUN WHEN HOT WIRED THE ELECTRIC FAN FAULTY.

Jan 03, 2011 | 2000 Audi A6

1 Answer

I change thermostat radiator cap I flush the radiator and it still geting hot. I noticed something the fan don't turn on until it reaches the line in the half of the temp. Gauge and only is on for 40 secs....


CHECK COOLING FAN FUSE AND RELAY.IF BOTH ARE GOOD.HOT WIRE COOLANT FAN.IF FAN DONT RUN FAN MOTOR NEEDS REPLACING. IF FAN MOTOR RUN WHEN YOU HOT WIRE IT.YOUR FAN MOTOR ELECTRICAL WIRES DAMAGED OR HAS SHORTS OR THE COOLANT TEMPERATURE SENSOR FAULTY.

Jun 23, 2010 | 2001 Dodge Neon

1 Answer

My radiator fan runs in full after a long drive


Many cars have an electric fan that will run on after the car has stopped. This is because the thermostatic switch is still hot to allow the fan to shut down. Often the thermostatic switch is set into the engine block but the fan only cools the water in the radiator. Only when the engine block has cooled will the fan shut off and this can take some minutes

May 16, 2010 | Cars & Trucks

1 Answer

Radiator Cooling Fan is not turning on when engine is hot.


HOT WIRE THE COOLING FAN USING CAR BATTERY AND JUMPER WIRE.IF FAN DONT RUN WHEN HOT WIRE REPLACE FAN.THE ELECTRIC MOTOR BURN OUT.IF FAN RUN WHEN YOU HOT WIRE IT.THE PROBLEM IS THE FAN RELAY OR OPEN COOLANT TEMPERATURE SENSOR

Sep 03, 2009 | 2002 Kia Rio

1 Answer

Running hot


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

Dec 01, 2008 | 2002 Nissan Altima

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