C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Aug 21, 2006 | 11:55 PM
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Does anyone know if the A/C - Heater blower on a 1991 Corvette is supposed to blow air through the top of the outside air vents, or is air supposed to be sucked in through them?




I noticed today that the air is blowing out the top of my vents.
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Old Aug 22, 2006 | 01:14 AM
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air gets sucked in from the cowl, or, from under the dash.

check under the hood, I will bet $$ you have a broken vacuum line... check under the left headlight, and over on the right side of the manifold.
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Old Aug 22, 2006 | 09:28 AM
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I thought it was supposed to suck in. I've checked the lines, & everything seems to be ok; However, I found one vacuum line that I can't check. I'm pretty sure it goes to the A/C. It dissappears behind the back of the distributor. Does in go into the firewall, or reroute over to the washer pump?
That's the only line I haven't checked, so it must be that one? If you can tell me where it dissappears to, I'd appreciate it, so that I can check it. Thanks!

Last edited by Coconut; Aug 22, 2006 at 06:35 PM.
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