Question about 1998 Oldsmobile Silhouette

1 Answer

My 1998 cadillac deville problem cooling fans dont engage.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 173 Answers

Check the relay that controls it it should be located under the back seat or posibly in the trunk. do u have the owners manual? look in thair first it will tell you exactly where it is. also try disconecting the temp sensor and see if the fans kick on then if not replace relay.

Posted on Apr 09, 2010

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

If fans are not working on a 1998 cadillac deville will it cause engine to overheat

Yes when you are sitting in traffic or just sitting the fans come on to cool the engine so if they are not working it will over heat. When you are on the highway the car should not over heat though becouse the wind is cooling the engine at this time.

Mar 24, 2012 | 1998 Cadillac DeVille

1 Answer

Where is the cooling fan sensor located on 1998 cadillac deville 4.6 northstar

The fans /fans are turned on by the pcm, using input from the coolant temp sensor, as well as the HVAC system. The cts is on the right rear of the engine below the egr valve.

Sep 24, 2011 | 1998 Cadillac DeVille

1 Answer

I have a 1998 cadillac deville, that is over heating

check thermostat, put a coolant pressure tester to check for leaks. check radiator for fluid levels.
check to see if electric fan is working.
start car,when cooled, open radiator cap and check to see if its flowing,if not, then could be a bad water pump.
check carpet under dash for wet spots to indicate if heater core is bad.
any one of those could be at fault.

Apr 02, 2011 | 1998 Cadillac DeVille

1 Answer

1998 cadillac deville , cooling fans for rad will not come on and I already replaced the AC comp relay

The only other things would be the coolant temp sensor or the engine computer. Alot of the new GM's have the on and off function of the cooling fans controlled by the computer. If the coolant temp sensor is ok, then most likely the problem is in the engine computer.

Oct 22, 2010 | 1998 Cadillac DeVille

1 Answer

1998 cadilac deville running hot

when exactly does it run hot, does the cooling fan kick on at 225 Fahrenheit? does the AC radiator fan run?

Sep 17, 2010 | 1997 Cadillac DeVille

1 Answer

Where is the fan relay switch for a 1998 cadillac deville

If for the heater it is a blower module on top of the evaporator core housing. If for the cooling fans it is inside the front fender behind the headlights. That is a module also tice the size of a normal fist

Jan 29, 2010 | 1998 Cadillac DeVille

1 Answer

Where are the cooling fan relays for a 1998 Cadillac Deville Northstar located?

Are you sure that you don't mean the cooling fan control module? It should be located up front next to the cooling fan. It is square shaped and has a long square shaped plug going into it. 00114_cooling_fan_control.jpgReads the temperature of the coolant and passes the information to the engine control computer (ECC). The ECC receives analog information and signals the cooling fan switch to cycle the cooling fan on or off, as required.

Jul 07, 2009 | 1998 Cadillac DeVille

1 Answer



Jul 04, 2009 | 1999 Cadillac DeVille

1 Answer

The temperature in our 1998 Cadillac Deville goes very high and it has overheated 2 times? We already had the thermostat replaced?

check for air in system(cooling system) also check to see if cooling fans on radiator come on when car reaches about 225-230degrees, if not check relays and fans to see if they ar good if so see if both of them work (they should) if they both come on see if they go off if they dont ever go off then the engine is not cooling down have a tech. check it out ,could be a blown head gasket or worse

Jun 28, 2009 | Cadillac DeVille Cars & Trucks

1 Answer

1998 Cadillac DeVille Overheats

The cooling fans will not come on until 225 degrees. Normal temp is around 199-215. Sitting still in traffic most will inch up around 220 or so. When you turn ac on it turns the fans on and may cool down engine, Check fan operation.

Jun 16, 2009 | 1998 Cadillac DeVille

Not finding what you are looking for?
1998 Oldsmobile Silhouette Logo

155 people viewed this question

Ask a Question

Usually answered in minutes!

Top Oldsmobile Experts


Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8215 Answers

Are you an Oldsmobile Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides