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Old 04-17-2008, 03:41 PM   #1 (permalink)
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Default Odd heater problem

This is for an 88 CRX

Not sure of exact terms so bear with me. My heater fan motor died so I replaced the motor. Shortly after it stopped working due to lack of power to the blue positive wire going to the fan. I replaced the fuze despite the fact that it wasn't blown and it worked again. Then same thing, after a few seconds on high it died. Now on low speeds it does fine and also this second time replacing the fuze didn't fix it, but I tested the motor and its fine. I'm thinking its the speed relay thing with the curly wires but I really have no idea. Help.
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Old 04-17-2008, 03:44 PM   #2 (permalink)
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sounds like it may be the blower resistor. which is behind the glove box in the heater box. i had mine go and it only worked on 3 or high
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Old 04-17-2008, 03:55 PM   #3 (permalink)
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theres no power even going to the resistor though. Could that still be the problem? Just dont wanna go spend 30 bux if theres a way to test and be sure.
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Old 04-24-2008, 08:04 AM   #4 (permalink)
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High speed should bypass the resistors for full 12v. I'll get the3 manual and check.

I'm right, the Blower switch itself provides the power on High. If the fan works on 1-3 the resistor is good. No fan on setting 4 means bad dash switch.

Last edited by cvic90; 04-24-2008 at 08:07 AM. Reason: check upp
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