Question about 2002 Chevrolet Cavalier Coupe

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No juice to heater fan or switch the relay is good what could it be

I have tested the relay it is good

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  • Chevrolet Expert
  • 179 Answers

Blower fuse is 30amp. underhood fuse box and heater control is 10amp.under dash fuse box.disconnect the blower and connect test light to two wire to blower connector and recheck. check separate purple wire for power and orange for ground by turning different speed on the switch.If no ground replace the resistor (4 wire connector) next to the motor on heater box.

Posted on Mar 27, 2014

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Posted on Jan 02, 2017

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leetamara
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SOURCE: Cooling fan wont work

The water temp sensor is located near the thermostat housing. This sensor is what tells the ECM to turn the fan on/off. The water temp sending unit is located near the same area. You know you have the correct sensor is because the water temp sensor has a 2 prong plug. The water temp sending unit only has 1 prong.

Posted on Sep 27, 2008

DAD5bbbbg
  • 111 Answers

SOURCE: where is the coolant fan switch for 2002 cavalier

it should be on the bottom of the radiator or by the thermostat housing,

Posted on Mar 25, 2009

MNfisherman
  • 11896 Answers

SOURCE: 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)

Posted on Jun 03, 2009

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How do I fix heater fan to operate at low and medium speeds. It only works on High.


depending on car some have a fan relay or its your switch itself

Jan 13, 2016 | Cars & Trucks

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When the blower switch is in the high position the resistor is bypassed and power flows directly to the motor. The motor is grounded to the car.
The fan relay also gets power from a 7.5amp fuse and is controlled by the HVAC control on the dash.
Do you have power into and out of the relay?

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First thing would be to check the fuse.
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If there is no positve voltage line to the fan switch and if your fuse is testing good , then it is possible that there is a break in the wiring harness.
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Apr 08, 2010 | 1999 Jeep Wrangler

2 Answers

I have no heat in my 96 Dodge Caravan. I have tried testing the blower fan and it works, I have checked the fuse it is fine, I have replaced the resister, and I still have no juice going to the inside fuse...


should be a blower motor relay inside fusebox under hood....try swapping it with another of the same kind from same fusebox to see if that is the problem...there is usually a diagram to tell you which relay is for what and they are just plug ins....good luck....lee

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