Question about 2000 Pontiac Sunfire

2 Answers

Heat/defrost motor quit

I would like to defrost my windows, it's a need now, not a want, to have my fan working.
it started working/quitting intermittently over the summer after our ac hose blew off in the engine due to a cracked rad seal and now it seems to sort of come on when we slam the door or if we go over a bump. but when it does start working, you can hear the motor or the fan slowly winding down and then all you hear is a knocking clicking noise until it stops completely....does that sound to you like the bearings in the motor (is that same as the motor resistor) or could it be an electrical short....?

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  • canihelpit Nov 09, 2008

    Thank you guest, I crammed myself up under the dash last week and that was exaclty what the problem was!

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2 Answers

I have a 99 sunfire and if you look under the dash on the passenger side, there is a circle shaped cover over the fan. on mine the problem was that the wires behind it came loose. jiggling them in certain ways would make it come on again full strength. i simply taped the wires into the right position so they would connect, but i'm sure there's a better more permanant solution if you have the right tools to get the cover all the way off and look at the wires. apparantly this is a common problem among sunfires.

Posted on Nov 08, 2008

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  • Pontiac Master
  • 61,168 Answers

Yes the motor has most likely failed, I would replace that and the motor speed control.

Posted on Oct 16, 2008

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