Question about 1997 Oldsmobile Aurora

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Whar is the temperature sending unit on a 1997

Whar is the temperature sending unit on a 1997 aurora my cooling fan will not came on at all

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Will the fan come on if you turn on the AC. This will confirm the fan relay and the computer are ok. If it still does not come on then the problem is not the temp sensor. If the car never gets hot enough the fan will not come on on its own. This would indicate a stuck open thermostat. The temp sensor should be located next to the thermostat housing. Follow the big hose on top of the radiator.

Posted on May 06, 2010

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1 Answer

Cooling fan wont turn on


you are expecting the wrong temperature unit to control the fan. The temperature sender unit controls the temperature gauge and the temperature sensor unit controls the fan operation. It allows current to go to the ECM and when a pre set temperature is reached the ECM activates a relay and the fan starts . Two completely different units to do two different jobs so if it is doing what you say then there is a possibility that the wires are crossed or shorted.

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My car is overheating while idling, once im driving the temperature drops back to normal, i realized that the fans are not running at all, what connections should i check? could this be the cooling fan...


turn your a/c on which should send signal to cooling fans to operate, regardless of engine temperature. check for voltage on cooling fan wires. if voltage is not present check relays and fuses located passenger side front of vehicle under hood. if voltage is present, then i would replace the cooling fans

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1 Answer

My legacy keeps overheating it has new thermostat new radiator and new head gasket what could it be


Hello, if this car has an electric fan for cooling the fan may not be running. Also many of these fans have more than 1 speed and usually the high speed is always on for an air conditioner.

I am not familiar with your brand, but there are temperature relays to trigger the fan. With the work done on this motor you must have disconnected some wiring. If you have a water temperature sender make sure you are using the wiring for the cooling fan and not the dash gauge. There are usually 2 water sensors.

I would check with a parts store to see if they are different sending units. Test the fan motor. It is possible that the fan was the major problem to begin with.

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Where is the cooling fan control switch on the 1997 olds aurora V-8?


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Feb 06, 2011 | 1997 Oldsmobile Aurora

3 Answers

COOLING FAN WONT KICK ON. DID A JUMP TO THE BATTERY FROM THE OUTSIDE PLUG AND FAN KICKED ON. BOUGHT A NEW RELAY FOR UNDER THE DASH BUT FAN STILL WONT COME ON. IS THERE A FUSE TO?


The cooling fan relay is located in the engine compartment just behing the left headlamp...not under the dash. There are cooling fan test connectors built into the wiring harness near the left strut tower. The cooling fan relay is controlled by the cooling fan temperature switch located on the rear of the engine. There are 3 temperature sending units on your car if it is equipped with a temperature gauge. If not, there are 2 sending units, One is for the computer and the other is for the fan relay.

The one for the cooling fan will have 2 wires, one Tan and Orange and the other Brown and White.

The cooling fans and cooling fan relay get their power from fusible links built into the wiring harness near the starter relay.

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1 Answer

1997 maxima cooling fans (both) only runs for one minute then they go off and then comes back on again only to go off after running for one minute. What is the problem. The car temp gauge those not show...


these fans will cycle on and off to maintain a 6 degree difference in temperature from the top of the radiator to the bottom. these have a temperature activated switch that turn them either on the radiator itself or installed in the water jacket of the motor. it should be fairly easy to follow the wires from the fan to the switch/ sending unit. if this cycling of the fans has changed from normal operation replace this switch and it will fix the problem

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1 Answer

Cooling fans will not come on my 1997 olds aorura


This could be a lot of things,check the fuse for the cooling fans,then check the coolant level,and if there is air in the cooling system this will happen,and of course the coolant sensor could be at fault,and the cooling fan relay.

Jun 05, 2010 | 1997 Oldsmobile Aurora

3 Answers

Where is the temperature sending unit?


Check on the thermostat housing. if not should be on the radiator.
if not send me a note and ill check my manuals

Aug 28, 2009 | 1997 Oldsmobile Aurora

1 Answer

Cooling fan


Yes, it's probably the PCM. I had the same problem, and upon replacing the PCM it started working again. If your cooling sending unit is new, and so many parts of your fan assembly are new, it's probably not receiving the signal from the sending unit. Hope this helps.

Jul 22, 2009 | 1997 Pontiac Sunfire

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