Question about 1999 Chevrolet Cavalier

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I have a 1999 cavalier and my coolant fan runs even when the engin is cold this problem is intermitent could it be my coolant sensor

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It's possible that it's the thermal switch that sends the ground signal to the cooling fan relay, or possibly that your cooling fan relay's internal contacts have burn points, causing the contacts to stick together at times. There may also be no problem at all. If you are running your A/C, or have your defroster on, which also causes your A/C compressor to run, your cooling fan will run so that it draws air over the A/C condensor, to exchange the heat the freon carries from the evaporator core to the A/C condensor.

Posted on Apr 05, 2010

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Yes.

Posted on Mar 30, 2010

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2 Answers

I have a 1999 oldsmobile intrigue with a 3.5 engine and it is overheating what might be the problem?


It's usually the thermostat, I woud pressure test the cap. It may need to be flushed. Are the fans working? Is there a 50/50 mix of anti-freeze

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1 Answer

Overheating


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I have a 1994 chevy cavalier 2.2L engine. the engine fan does not turn on causing the car to over heat. What makes the fan turn on, is it a thermostat or a fuse?


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Feb 20, 2011 | 1994 Chevrolet Cavalier

1 Answer

Where are the schematics to the relay or coolant temperature sensor for 1999 chevy cavalier


It's located on the left top front of the motor. It's threaded into the coolant tube.
If you're having trouble with your electric radiatior fan, if you disconnect the wire plug from it and if the fan is OK, it will start running after 5 seconds or so, if the fan doesn't start it's more than likley the temp. switch.

The electric fan should run all the time when the air conditioning is on.

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2 Answers

I have a 1999 chevy cavalier and the cooling fan will not start


CHECK COOLING FAN FUSE AND RELAY.IF BOTH GOOD SCAN CAR TO CHECK COOLANT TEMPERATURE SENSOR FAULT CODE.THE PCM AND COOLANT TEMP. SENSOR IS WHAT CAUSE FAN TO RUN AT CERTAIN TEMPERATURE.IF ALL IS GOOD.HOT WIRE COOLING FAN USING JUMPER WIRES TO BATTERY.IF FAN DONT RUN REPLACE FAN MOTOR.IF FAN RUNS YOU HAVE SHORT OR BROKE WIRE IN THE COOLING FAN ELECTRICAL CONNECTOR.

May 06, 2010 | 1999 Chevrolet Cavalier

1 Answer

97 jeep cherokee electric fan problem


sound like coolant temperature sensor is open or not working.scan it to see when engine get operating temperature when coolant temperature get 190 degrees the coolant temp sensor should show 190 degrees if it shows 80 degrees or lower it not working replace it.the coolant sensor control coolant fan.when it gets hot it resistance changes or lower.the pcm grounds it .then cooling fans will run.

Jun 17, 2009 | 1989 Jeep Cherokee

1 Answer

My 1987 Chevrolet Z24 Cavalier cooling fan will


since you have already tested fan and relay and both work, the problem may be the engine temp sensor. There are two sensors. One goes to instument cluster. This is engine coolant temp sensor, the other is engine temp sensor which is usually attached to engine block, sometimes they are connected to thermostat housing with the coolant sensor. You can pully the engine temp sensor and test that sensor same way as relay. (with mulitimeter)

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2 Answers

99 cavalier overheats


check the coolant for hydrocarbons as that will comfirm the headgasket problem all those symptoms would indicate..

Jan 15, 2009 | 1999 Chevrolet Cavalier

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