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doyle moore Posted on Feb 20, 2019

ENGINE/COOLANT FAN WONT COME ON SUSPECT SENSOR WHERE IS IT LOCATED

5 Related Answers

Anonymous

  • 2 Answers
  • Posted on Jul 09, 2008

SOURCE: 99 cadillac de ville

the coolant temp sensor is at the rear of the engine and is a "bad word" to get to. the 3 relays are at the bottom,under the fans. if you remove the driver side fan out of the way( 2 10mm bolts holding the fan) you should have good access to them. they do have locks on them and may be tricky to unplug. there is a 7/16 nut holding the relay plate down. remove and it should be easy to remove them.

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Anonymous

  • 962 Answers
  • Posted on Nov 24, 2008

SOURCE: Location of coolant temperature sensor

Maybe this will help . although this is from a 1997 Caddy.


Cadillac DeVille Engine Coolant Temperature (ECT) Sensor Location62451583.gif

Anonymous

  • 341 Answers
  • Posted on Dec 10, 2008

SOURCE: coolant sensor location

On the 98 2.4 the coolant level switch is located on the bottom side of the coolant recovery tank. The switch contains a reed switch and a magnetic float. When the coolant level is normal, the float rests away from the reed switch, causing the switch to be open. When the coolant level decreases in the coolant recovery tank below a specified level, the float rests on the reed switch and the switch closes, illuminating the LOW COOLANT light.

Anonymous

  • 1 Answer
  • Posted on Feb 21, 2009

SOURCE: Need the Location of the temperature sensor on 95 olds cutlass.

The image isn't loading, so I can't tell if this has been 100% answered, but here's the text version:

Should be a fuse panel under the hood, passenger side near the coolant tank and radiator inlet. In that panel should be 2 large square fuses. These are fuse/relay combo deals. Switching these out should fix you right up. Mine had the same problem about a month ago and I had to replace them then.

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Apr 22, 2009

SOURCE: need location of coolant sensor on 2002 chrysler 300m

near the thermostat I think, look for this part.

f2e8303.jpg

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8helpful
1answer

Overheating

OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.
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2003 Chevy Impala, running hot. Changed fan shroud because cooling fan wouldn't turn on, switched out fan relays, no check engine light. Cooling fan still will not turn on.

Would turn the key on no need to start it and unplug the ect engine coolant temp sensor. If fans come on then suspect a faulty etc which may not turn on the engine light. Which engine is in the vehicle so I can help locate the ect which is usually by the thermostat housing.
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Temperature gauge goes up and down, no over heating, new thermostat and radiator flush..95 dodge caravan

Air is trapped in the engine most likey.Remove the coolant temp sensor located just next to the thermostat housing.Pour coolant in the radiator till no air comes out the hole and replace sensor and top off radiator.it should be full.If problem persists suspect clogged radiator or coolant fan issue.
2helpful
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Air conditioner fan runs all the time. Turn on key the fan starts. Car is not hot, has been sitting overnight Question how to turn off so it only works with the AC

I would suspect a stuck cooling fan relay. Your going to have to locate the malfunction to get the operation that you seek. Reference owners manual for lcoation of the cooling fan relay and try switching it out.
5helpful
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My electric fan wont come on.

First check the fuse,then check to see if the coolant level in the radiator is low,then if you can check the cooling fan relay,and the cooling fan motor to make sure it is good,if all this checks out fine,then replace the coolant sensor,and bleed the cooling system of all the air in it.
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Is there an engine coolant sensor on a 2001 t&c and if there is where is it? My engine fan does not come on. I tested the fan and it works.

2.4 ENGINE COOLANT SENSOR IS LOCATED ON THERMOSTAT HOUSING THE 3.3 AND 3.8 ENGINE COOLANT TEMPERATURE SENSOR IS LOCATED LOWER INTAKE MANIFOLD.ALSO CHECK COOLANT FAN FUSE AND RELAY.FUSES RELAYS LOCATED LEFT SIDE OF THE ENGINE COMPARTMENT.
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99 300m overheated today now fans wont turn on

Have you found the reason for the overheating? Other than a stuck-closed thermostat, maybe the fans were not working before. First suspect for the fan problem is the thermal sensor located near the thermostat housing on the engine. Try turning on the A/C system--that should start both fans immediately. If they do, that eliminates the fans, relay, fuse, and computer. If they don't come on, check that both fans turn freely and check the fan fuse in the fuse compartment. The relay is a solid state device that should be located near the fans on the driver's side. If the relay has a browned look, it is probably fried. Make sure to blow out the radiator core with compressed air (from the engine side) to get rid of collected bugs and other debris. Hope this helps track down the problem.
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Coolant leaking replace every three days coolant fan wont stop ru

This link has a diagram showing the location of the relay: http://autorepair.about.com/library/faqs/bl581g.htm

The Pulse Width Modulated (PWM) radiator cooling fan relay is located behind the front bumper fascia below the right head lamp.
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Fan wont work fuses are fine coolant level was low i filled it up

I suspect you have a bad fan relay or temperature sensor. Here's a link to a page where you can see what these parts look like. The fan relay is usually located in the engine compartment inside a plastic box with a removable lid. It just plugs in and out. The temperature sensor will screw into your engine block and have a cable connected to it. Your owner's manual may give you their exact locations. http://www.diypartscatalog.com/ShopByVehicle.epc?q=2004-PONTIAC-Grand--Prix-V6--31ci--3.8l--F/i--Vin---Belts/hoses/cooling&yearid=2004%40%402004&makeid=67%40%40PONTIAC%40%40B&modelid=13463%40%40GRAND+PRIX&engineid=30226%40%40V6%2D231ci+3%2E8L+F%2FI+Vin+2%40%4030226&catid=2%40%40Belts%2FHoses%2FCooling&subcatid=36@@Sensors%2C+Switches+and+Relays&mode=PA
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it's hooked up to the temperature sensor. if you don't get a temp light on, the sensor might be bad. it's usually located where the upper radiator hose goes into the engine. also check your thermostat.
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