Stinkin Blower Motor - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-05-2012, 06:01 AM   #11
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Don't think the B-villes have cabin filters.
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Old 05-05-2012, 08:40 PM   #12
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Today I decided to investigate how the air gets recirculated into the AC system when it'* on Max AC. And to my surprise the only place I could find that was sucking air were the little vents that blow air on your feet. The vent openings are about 1 1/4 inches square give or take, and there are four of them. So if you add the surface area of those openings together, they roughly add up to the area of one of the four dash vents blowing air on you. So basically the system physically can't blow more air because it can't supply enough air to meet the demand.

So I did what any annoyed car owner would do, I removed the plastic vents from the front kick area that blow(restrict the flow of) air on to your feet. For the sole purpose of improving air flow back to the blower, and it worked.
Here it is
https://www.gmforum.com/attachment.p...1&d=1336260919

I would say I picked up about 15% more air flow with those vents out. Next I'll pick up a new blower motor, cover and hopefully increase the air flow some more.
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Old 05-05-2012, 09:22 PM   #13
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Interesting find you have sir. We may have to add this to our mod collection once its verified across the different years.
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Old 05-05-2012, 09:27 PM   #14
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Quote:
Originally Posted by Richardyuyu1 View Post
After a closer inspection I can see a hole right below the motor and now I remember there was a hose that went from the motor cover to the evap housing. So basically I have a quarter sized hole right in the middle of the AC system four inches from the engine. I forgot that I broke the hose and part of the motor when I was changing my valve cover gaskets.I assume thye hose just circulates air back to the motor keeping it cool? I'll cover the hole till I can get a new cover.

Just a heads up, that hose is available from Rock Auto (AC Delco Part # 1534062).

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