Question about 1991 Buick Century

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Where are all the fuse locations on a 1991 century? I want to determine why my coolant fan isn't working.

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There should be a black box under the hood and is a fuse box under the steering wheel

Posted on Jun 14, 2009

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New coolant fan and new control module but coolant fan does not work on my 2002 ford escort zx2


Try checking the fuse box under the hood. It should have a fuse marked cooling fan or cooling system. If the car does start, that means the computer isn't out, but maybe there is a bad relay by the fan or in the circuit or even the temp sensor may be bad. The fan won't run until the temp is high enough; usually by the time the thermostat opens.

Aug 11, 2012 | 2002 Ford ZX2

1 Answer

1991 saturn sl1 is overheating, new thermostat installed, fan is functional, suspecting sensor? and if so, where is it?


Try this for a diagnostic:
Check coolant level. Fill if necessary. Check for leaks.
Start vehicle. Allow to run.
Observe coolant temp gauge. It should slowly climb to center.
Once coolant temp gauge reaches the middle, the coolant fan is triggered to activate by the vehicle's computer (ecm). Fan should come on until temp drops slightly then cycle off.
If fan is working, move to next step. If fan isn't working, possible causes:blown fuse, faulty fan relay, coolant fan switch, faulty cooling fan.
Next step.
If there are no leaks, and the fan works properly as described above, have a compression test performed. This test will basically measure the compression power (in PSI) in each cylinder by screwing a device into the spark plug hole of each cylinder cranking the vehicle (with ignition disabled) and observing the gauge. Each cylinder reading should be significantly close to its next one. If not, suspect a faulty cylinder head gasket.

Aug 28, 2011 | 1991 Saturn SL1

1 Answer

It is running hot. The fan is not coming on. The fan motor has been replaced and the Coolant Fan Relay is not bad. What next?


The one in charge of activating the fan at a determined temperature is the coolant temperature sensor (CTS), I think it's faulty and that's why the fan isn't working.

Jun 27, 2011 | 2001 Jeep Grand Cherokee

1 Answer

My dome light in my '91 chavalier RX stopped working and I replaced the bulb. It still isn't working. A male friend of mine said I needed to change the fuse. What size fuse does it take and...


The fuse box on your 1991 Chevrolet Cavalier should be located under the dashboard, to the left of the steering column....when you find the blown fuse, you can use that to determine what size fuse you need to replace. Hope this helps.

May 19, 2011 | Chevrolet Cavalier Cars & Trucks

1 Answer

Coolant fan keeps running all the time. I replaced the coolant sensor in the housing of the thermastat. Not sure if there is another sensor to replace or if the problem would be the (ECM).


There are relay switches which control fans, check with your local auto parts store, they should be able to help you to locate it. They are simple to remove and replace, and just have one plug to disconnect them.

Oct 14, 2010 | 1991 Buick Century

1 Answer

The power windows on my 1991 Buick Century stopped working. they are all down and we can't get them to work.


Power Windows usually have an Automatic self resetting Circuit Breaker located neat the Fuse Box instead of a Fuse. This breaker has probably failed which has permanently isolated the power to the window circuit.

Jul 29, 2010 | 1991 Buick Century

2 Answers

My 1995 buick century 4 door v6 3.1 is over


You need to change the "Coolant Temperature Sensor". That usually controls the fan. If the fan does not run, you will overheat.

Jul 28, 2010 | 1995 Buick Century

1 Answer

Why isn,t my radiator fan kicking in when my fuses are fine


because your fan or relay or your temperature censor could be bad find the coolant temp sensor disconnect it and put a jumper wire on the connector to joint both wires and you should hear the relay click when the wires are crosed and if the fan is good it should come o n imediately after hooking up the jumper wire so if it does than replace the temp sensor

Jul 30, 2009 | 1991 Oldsmobile Cutlass Ciera

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