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Old 05-01-2009, 06:45 AM   #1 (permalink)
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Default Ac Not Working-blower/relay??? Help!!

The A/C just stopped working yesterday. We were in a drive-thru then we smelled like something was burning; then I realized that even thought it was on the highest setting, it was barely blowing.

Here's what has been done:

A/C system charged and working-R12 (about 2 years ago-blows cold!)
Changed resistor in cowl with new one about 1 1/2 year ago
Switched out the A/C switch dash; went bad
Had a fusible link issue a while back...that has been fixed.

The motor didn't make noise or anything...just faded out.

Could it be another relay somewhere else?? Bad motor?

PLEASE HELP! It is pretty hot here in Sunny FLA!

Thanks
Ali
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Old 05-01-2009, 07:12 AM   #2 (permalink)
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I would check the relay and the fuse first but the burning smell tells me your in for tearing the dash out to replace the blower motor, while your in there I would do the heater core as well. This job is a real pain in the ass.
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Old 05-01-2009, 08:14 AM   #3 (permalink)
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I have ripped the dash apart before...royal PITA!

I was able to confirm the motors are getting power.

The a/c works in low; however it seems like it bareley blows, and as you turn the switch to med and high you can hear the fan actually slow down instead of sppeding up.

Checked the fuse in the dash; it's fine.

Where is the relay you are referring to? There appears to be a relay looking box next to one of the motors under the dash, is this it?

Thanks!
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Old 05-05-2009, 07:44 AM   #4 (permalink)
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It could be the switch in the dash, the contacts go bad you can take it out and clean them up. Also the resistor under the decker goes bad too.
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Old 05-05-2009, 11:37 AM   #5 (permalink)
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I have cleaned the switch; still nothing.
I already replaced the resisitor, do you think it is normal for it to go out so soon??

checked the motors, they are fine.

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Old 05-07-2009, 06:28 AM   #6 (permalink)
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Is it possible the compressor burned up and that's the smell you noticed?
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Old 05-07-2009, 08:42 AM   #7 (permalink)
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Quote:
Originally Posted by OJ's DNA View Post
Is it possible the compressor burned up and that's the smell you noticed?
I'm pretty sure that there would have been a helluva belt squeal when the compressor seized...don't ask me how I know.

What did you replace the resistor with...OEM style or the new improved type like AB sells? When it was barely blowing was it still blowing cold air? My guess is you either need a new resistor or you've got some wires with worn insulation grounding out somewhere in the circut...start looking for melted wires.
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Old 05-27-2009, 11:29 PM   #8 (permalink)
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That just happened to me on Friday of Memorial Weekend going north on I5 in the middle of nowhere in my '89. Outside temp was close to 90 degrees. Traveling 85-90 mph, a/c on high. Symptoms: sudden terrible burning smell, followed by noise in front of passenger seat. Pulled over, lifted the hood, noticed black sticky tar-like substance in a scatter pattern on the a/c drier and hoses. At idle, the a/c compressor was making noise and emitting burning smell.
I disconnected the electrical plug to disingauge the clutch. Smell dimminished, noise continued. I cut off the belt...no more noise.....no more problems...of course, no more cool air.
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