Question about 1995 Oldsmobile Cutlass Supreme

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I have a 95 olds cutlass supreme, the cooling fans will not come on. i have replaced the temp sensor in the intake and also the relays, yes i have checked the fans, wired them direct and they do work, i'm bumfussled? whats next??? aren't they supposed to come on when the a/c is turned on, they don't. it has a 3.1 engine

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I have same problem, took to the dealer they checked fans, sensors and relays all working they said I needed a IPC. Instrument Panel Cluster which is all the gauges, they wanted 450. to repair. Junk yard sells for 55. Hope this helps

Posted on Oct 07, 2009

  • Darlene Wcislo Oct 07, 2009

    The Temp sensor you replaced had two wires that plug in, that you accessed from the front of the car, there is also a Temp. switch which has one wire going to it, located on the back drivers side of engine by transmission dip stick, and small silver tube. You will need to remove air filter canister to get in there with a 9/16 open end wrench. This switch works with the gauge. If it still does not work, IPC bad.



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1 Answer

Where is the cooling fan switch on 92 cutlass supreme?


It doesn't exactly work that way. The temp sensor on the engine sends a signal to the computer, and the computer grounds the fan relay.
You could use a scanner to watch the temp sensor data, or jumper the fan relay to see if the fans will run.
The fans should also come on when the ac is running.

Sep 19, 2012 | 1992 Oldsmobile Cutlass Supreme

1 Answer

Does a 95 cutlass supreme have a fuse for the cooling fans or only the relays. I dont see a fuse for the cooling fans. Neither fan is coming on, Ive jumped the fans they both work, Ive changed out the...


There are three fuses and two relays for your coolant fan. They should all be in your underhood fuse box. They may not be marked "coolant fan", so check them all, (2) 60 amp , (1) 20 amp, (1) 15 amp. If all the fuses are good, you may have a bad fan switch (temp sensor). It tells the fan when to turn on, follow the wire from the fan motor to find it.

Dec 19, 2009 | 1995 Oldsmobile Cutlass Supreme

1 Answer

Does a 95 cutlass supreme have a fuse for the cooling fans or only the relays. I dont see a fuse for the cooling fans. Neither fan is coming on, Ive jumped the fans they both work, Ive changed out the...


Yes, in the underhood electrical center, a 60 amp with a red wire going to relay 1 and a 20 amp with an orange wire going to relay 1 and a 15 amp with a brown wire going to relay 2 and another 60 amp with a red wire going to relay 2. The diagram doesn't show a temp sensor, but it does show dark blue and dark green wires going to the power train control module, so it must get the temp input from there. The second fan usually comes on when the A/C is turned on and it apparently gets that signal from there also. Hope this helps.

Dec 19, 2009 | Oldsmobile Cutlass Supreme Cars & Trucks

1 Answer

1995 cutlass supreme. There are two cooling fans.


it will come on but only when the engine is very hot and the first fan cant cool it down that fast,, its turned on by a difrent heat censor so the engine needs to be realy hot to set the second fan running and it may even then only run for 30 seconds till the engine temp drops off,,, as long as the car is running in the normal heat range dont worry about it,,, if its cooking way up in the red,,,,,now worry about it,,fast too,,

Nov 10, 2009 | 1995 Oldsmobile Cutlass Supreme

2 Answers

Automobile cooling fan problem.


There are two relays for the cooling fans, one or both may be bad.
With the engine running and the AC on, the fan should be running.
With the engine hot the fan should cycle. I believe the relays are mounted on the drivers side front fender on that model.

Sep 09, 2009 | Cars & Trucks

2 Answers

93 olds cutlas supreme overheating but there is no steam. Where is the fan temperature sensor located?


Usually near the thermostat.
By the way, remove the thermostat and drive around with the car. If it still overheats, might have some other problem, like you said, temp sensor, or some kind of electrical problem.

Jul 14, 2009 | 1993 Oldsmobile Cutlass Supreme

1 Answer

Radiator fans won't come on


Hey I had the same problem with my 95 olds cutlass supreme. First i checked that the fans were receiving power by testing the voltage. Then I noticed that they were recieving voltage just not coming on. When the engine temp got pretty high, they finally came on, another words the gauge could be broken or the engine just does not tell the fans to come on until it has reached a high temp. So i started the vechicle, left it in park and gave it gas until the temp guage read very high, it reached like 230 to 250 then the fans came on. Try getting the temp up there and then see if the fans come on an dlet me know at keaka18@aol.com

Apr 06, 2009 | 1995 Oldsmobile Cutlass Supreme

1 Answer

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.

Feb 11, 2009 | 1995 Oldsmobile Cutlass Supreme

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