Question about 1995 Cadillac Seville

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My 95 cadillac sevile sls is overheating. radiator

My 95 cadillac seville sls is overheating. radiator fan not working or turning on when tempature is reach. I checked the relays & all fuses in the front and trunk are good, hot wire both radiator fans they work. but the fans are not coming on.. please provide any type of diagram or any detal on what the problem may be....

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  • hectcol4 Apr 17, 2009

    Hello Mr Brown;



    Well, thank you for getting back to me quickly....But let me give you the run down....I start the car up and let it run for about 5-10 minutes...The engine reaches the tempature between 195-210 and not one of the radiator fans turn on to cool the engine tempature back to normal reading.....I checked both plugs in the radiator fans for voltage and power....I hot wired both fans from the battery to both fans and they turn on....so that means the fans are good...I checked all fuses they are good also.....I checked the relays and changed them also, they are good.....SO what is happening here is that the radiator fans to coll the engine down are not coming on....The haynes book says somethign about a tempature fan cooling sensor, but they is no location to be found....The thermostast is good...There is no temperture sending unit anywhare that I can see.....So the question here is what can be the problem and is there any diagram or detail info on where this 2-items can be located or is this a PCM problem or what.....That is as clear as I can explain to you the problem I'm having....

    Thank you for taking your time in helping me on this...But I'm not to familiar with cadillacs...I undertsand they have alot of sensors...

  • Tim Brown
    Tim Brown May 11, 2010

    I will check at work on a diagram for that temp sensor. and write you tom. if you havent found it yet.. but the places you can look are the actual radiator. usually on an corner or side of the tanks. follow the upper radiator hose and see to the engine and see if there is any sort of sensor. 99% of cars usually have the thermostate were the upper hose goes. and usually the temp sencer is located there. usually a two wire plug in. sometimes three for the temp gauge. look around there and let me know. Ill still look at a couple diagrams for you

  • Tim Brown
    Tim Brown May 11, 2010

    have you checked the temp sensore on the thermostate

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Check cooling fan sensor,which tell the fans to come on

Posted on May 19, 2009

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