Question about 1995 Pontiac Sunfire

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Heater does not work, no blower control

1995 Pontiac Sunfire sat for a year and now the heater does not work. No blower sound. Check the control unit and I can feel the clicks from cold to hot. Check the resistor (under hood,drivers side box), checked under the dash fuses. The AC compressor is out as told to us by a repair shop. Would they have disconnected anything that would affect the heater?

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  • jamesvogel15 May 11, 2010

    when you checked resistor did you check the voltage as well? If so what did it read if anything? From the sounds so far looks like a short in either then in dash line running to blower or a bearing has locked inside the motor itself from sitting.

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Hehehe, well, you THINK you checked the resistor, but you didn't, that's the fuse or relay.

It's behind the blower motor, held into the blower motor housing by 2 5.5MM screws. You get upside down on the passenger floor and look under the dash, you'll see the motor, and an electrical connector plugged in right behind it (firewall side). I just changed mine cause after 200k miles it literally broke in half on a cold morning. They're a pain to get to, especially the back screw so good luck if you don't have a universal joint for a 1/4inch socket. Another way is to pull back the carpet, and take a razor blade to the rubber&foam floor noise dampener to cut a small hole just underneath the screw. That'll allow a small socket wrench to get the right angle to get it out. 5.5MM bolts by the way.

If it sat for a long period of time, a critter could have easily gotten into your air system, and chewed/broke it as well so might want to remove the blower motor (just a couple of screws and it slides out) to check if there's anything in there such as broken pieces or a nest. Good Luck.

Posted on Feb 15, 2009

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