Question about 1999 Chevrolet Cavalier

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

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  • yadayada
    yadayada Jun 04, 2010

    don't have any such diagrams

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  • Master
  • 435 Answers

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.

Posted on Jun 05, 2010

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Posted on Jan 02, 2017

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1 Answer

The location of a 2002 chevy cavalier cooling fan sensor


The cooling fan is controlled by the PCM - powertrain control module through a relay ! There is no cooling fan sensor , there is a coolant temperature sensor ! This coolant temperature sensor is an input to the engine computer , if there were a problem wit the sensor the check engine light would be on .
Cooling Fan Control
The engine cooling fan system consists of one cooling fan and one relay. The relay is powered by the battery positive voltage circuit and controlled by a switched ground from the powertrain control module (PCM).
During operation, the PCM supplies the ground path for the cooling fan relay through the cooling fan relay control circuit. This energizes the cooling fan relay coil, closes the relay contacts, and supplies battery positive voltage from the cooling fan fuse through the cooling fan motor supply voltage circuit to the cooling fan. The cooling fan motor is grounded through its own ground circuit.
The PCM commands the fan on under the following conditions:
?€¢
Engine coolant temperature exceeds approximately 106?°C (223?°F).


?€¢
A/C refrigerant pressure exceeds 1310 kPa (190 psi).


?€¢
A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).


?€¢
Vehicle speed is less than 8 km/h (5 mph) for more than 750 seconds. The fan will turn off when vehicle speed is greater than 8 km/h (5 mph) for more than 20 seconds.

Jun 12, 2015 | 2002 Chevrolet Cavalier

1 Answer

My 1999 Chevy cavalier started over heating and I


Probably a faulty coolant temperature sensor.

Sep 17, 2014 | 1999 Chevrolet Cavalier

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The fan that is behind the radiator isnt turning on and my 1994 chevy cavalier keeps overheating


test your fan motor.run b+ and ground to your motor and see if it runs.if it doesnt it is probably your coolant fan switch located on the cylinder head or the coolant fan relay.hope this helps.keep posted.

Feb 23, 2011 | 1994 Chevrolet Cavalier

1 Answer

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?


REPLACE THERMOSTAT BUT IT SOUND LIKE FAULTY COOLANT TEMPERATURE SENSOR.BUT CHECK COOLING FAN FUSE AND RELAY.IF ALL IS GOOD HOT WIRE COOLING FAN IF COOLING FAN WORKS.PROBLEM COULD BE FAULTY COOLANT TEMPERATURE SENSOR. DAMAGE FAN WIRING OR FAULTY PCM.IF COOLING FAN DONT RUN WHEN HOT WIRED.REPLACE FAN AND MOTOR.

Feb 20, 2011 | 1994 Chevrolet Cavalier

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

Where is the iat sensor located on a 1999 chevy cavalier 4cyl


The Intake Air Temperature (IAT) sensor determines the air temperature inside the intake manifold. Resistance changes in response to the ambient air temperature. The sensor has a negative temperature coefficient. As the temperature of the sensor rises the resistance across the sensor decreases. This provides a signal to the PCM indicating the temperature of the incoming air charge. This sensor helps the PCM to determine spark timing and air/fuel ratio. Information from this sensor is added to the pressure sensor information to calculate the air mass being sent to the cylinders. The IAT is a two wire sensor, a 5-volt reference signal is sent to the sensor and the signal return is based upon the change in the measured resistance due to temperature.

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Fig. 1: The IAT sensor is located in the air cleaner outlet tube-2.2L engine and 2.4L engine

Hope helped.

Apr 11, 2010 | 1999 Chevrolet Cavalier

1 Answer

Chevy cavalier temp guage stopped working on instrument panel


if the wiring is good and there are no blown fuses, likely the gauge itself will have to be replaced

May 30, 2009 | 1999 Chevrolet Cavalier

1 Answer

Coolant temperature relay switch


Most vehicles use a coolant temperature sensor which is located near the thermostat directly connected into the coolant line, or near the thermostat housing, there are relays for the cooling fan which is usually located in the power distribution box under the hood.

Mar 16, 2009 | 1998 Chevrolet Cavalier

2 Answers

Cooling fan


so hard wire a kill switch

Jul 30, 2008 | 1999 Chevrolet Cavalier

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