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Air conditioner problems

Tiny
LARRYBB
  • MEMBER
  • GMC
I have a 1999 chevy astro van, 175,000 miles. My a/c did blow fairly well on low and med. But will shut off if placed on high. We replaced the blower motor, the fan speed control knob and the blower resister without sucess. It did with each new item replaced blow on high for a few minutes, and then it would shut off again. It still blows very little air on low and medium. Any suggestions [/b]
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Wednesday, April 19th, 2006 AT 9:51 PM

4 Replies

Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
Behind the A/C dash assembly there is a brown wire that leads to the blower resister. It has a black connector that will often get hot and burn so you will loose voltage. Check it out and let me know.
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Thursday, April 20th, 2006 AT 9:08 AM
Tiny
LARRYBB
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  • 3 POSTS
In regards to the a/c wire in the dash we checked it to find no burnt wires but the high works when it wants to but doesnt blow out air very well as on all other settings also any more suggestions
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Tuesday, April 25th, 2006 AT 4:59 PM
Tiny
LARRYBB
  • MEMBER
  • 3 POSTS
Also the blower motor resister has a plug wire that fits in it. It has about 6 to 8 diffrent wires going into a plug on it (under the hood) that goes into the resistor, one of those on the plug part has been burnt could that be the problem should we replace that plug in?
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Tuesday, April 25th, 2006 AT 5:04 PM
Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
By all means repaece the plug. Get one from a salvage yard and splice it in.
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Sunday, April 30th, 2006 AT 1:49 PM

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