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  #1  
Old 10-11-2012, 09:50 AM
new92 new92 is offline
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Default A/C fan issue

Wassup guys. Long time no see (3, now 4, kids will do that you lol)

This one has me stumped. Low pressure switch went bad in the blazer this past July and I swapped it out. All was good ac works. Yesterday on the way home I could hear the compressor clicking on/off about about every 3 sec and air was just cool. Put the cheapo gauge on a refill can on and when the compressor kicked on the pressure read normal. So this morning same thing with defroster, on and off but it got the job done on the window.
This is where I have the head scratcher. When I was on blanding getting up to speed the defroster fan sped up. When I stopped at a light it would slow down. Speed back up and around 45 and it would speed back up again(get louder). I know if it was loosing air speed it could be a vacuum leak but the fan getting louder, blowing harder has me stumped. It wasn't a 1 to 1 increase like with rpms or anything. It would just gradually get louder and quieter as I sped up or slowed down. Any ideas?
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Old 10-11-2012, 09:52 AM
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FasTruckMonkey FasTruckMonkey is offline
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What year Blazer?
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Old 10-11-2012, 09:53 AM
new92 new92 is offline
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2001
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