CLIMATE CONTROL FIX.....simple!!!!!
Thread Starter
Drifting
Joined: Jun 2002
Posts: 1,305
Likes: 11
From: Savannah Ga.
CLIMATE CONTROL FIX.....simple!!!!!
Air blew thru the top defroster and on the floor ...put up with this for 1 year ....was going to buy new control....read recent tech-tip : Itt work! quote:
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I don't doubt that you have detected a code ~ but you may want to look into this also:
Plastic vacuum tee under passenger fuel rail cover
One of the most commonly overlooked, yet easily recognized vacuum leak occurs with a plastic vacuum “T” under the LT1 passenger side fuel rail cover. Located about mid-way between the front and back, and situated very closely to the top of the intake manifold, the “T” is the main vacuum source for the HVAC and Cruise control. Due to its location, this fitting is subjected to enormous heat and has been known to deteriorate on a routine basis..
Visual inspection often doesn’t reveal that the vacuum “T” has failed. The vacuum “T” tends to slowly deteriorate over a period of time. The best method for inspection is to actually turn the “T” over and look at the underside. What you find may shock you. Due to heat, the “T” fitting actually decomposes on the side toward the intake manifold and develops large holes similar to Swiss Cheese. Replacement is cheap and easy.
GM calls that vacuum “T” a “valve”. The GM part # is 14056648. You can pick one
up from your friendly Chevrolet parts man for cost + 10% + tax = ~ $3.00.
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[Modified by redcorvettedave, 11:12 PM 5/23/2003]
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I don't doubt that you have detected a code ~ but you may want to look into this also:
Plastic vacuum tee under passenger fuel rail cover
One of the most commonly overlooked, yet easily recognized vacuum leak occurs with a plastic vacuum “T” under the LT1 passenger side fuel rail cover. Located about mid-way between the front and back, and situated very closely to the top of the intake manifold, the “T” is the main vacuum source for the HVAC and Cruise control. Due to its location, this fitting is subjected to enormous heat and has been known to deteriorate on a routine basis..
Visual inspection often doesn’t reveal that the vacuum “T” has failed. The vacuum “T” tends to slowly deteriorate over a period of time. The best method for inspection is to actually turn the “T” over and look at the underside. What you find may shock you. Due to heat, the “T” fitting actually decomposes on the side toward the intake manifold and develops large holes similar to Swiss Cheese. Replacement is cheap and easy.
GM calls that vacuum “T” a “valve”. The GM part # is 14056648. You can pick one
up from your friendly Chevrolet parts man for cost + 10% + tax = ~ $3.00.
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[Modified by redcorvettedave, 11:12 PM 5/23/2003]
Le Mans Master
Joined: Apr 2001
Posts: 7,410
Likes: 252
From: Little Elm TX
Re: CLIMATE CONTROL FIX.....simple!!!!! (redcorvettedave)
Yeah, I've been dealing with an issue for the past 6 months, I thought the A/C controller was going out (might still be :rolleyes: ). Just recently realized that most of the problem was the fan. I just got done putting in a new blower motor and all is well.............for now.
