bad blend door actucator? - Chevy Impala SS Forum
 
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post #1 of 6 (permalink) Old 03-26-2015, 10:39 PM Thread Starter
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bad blend door actucator?

so currently driving my 95 Caprice in the rain sucks, until I replace the clutch on my compressor I have no AC, and when I run the defroster it blows out both the defroster vent and the dash vents.

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post #2 of 6 (permalink) Old 03-27-2015, 08:02 AM
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I have the same problem bro. If I move the thermostat control back just to the beginning of where the blue and red meet it will blow up on the windshield I need help too.
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post #3 of 6 (permalink) Old 03-27-2015, 11:06 AM
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Just in case it helps, here's a link to photos of the HVAC box out of the car (w/ labels).

http://s368.photobucket.com/user/The...?sort=3&page=1

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post #4 of 6 (permalink) Old 03-27-2015, 07:39 PM
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I had the same issue on my '91. My fix was replacing the A/C vacuum control valve. Several vacuum lines are hooked to the rear of it and when you move the selector switch different vacuum lines are used. The valve could also be fine and you could have a leak in the vacuum lines going to the switch. When you move the selector switch on the dash and you hear the "hiss" noise, you are hearing the vacuum control valve.

The part is different on my '91 and your '95. It looks like it would be #16171742 for your '95.

Last edited by 99bluez; 03-27-2015 at 07:41 PM.
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post #5 of 6 (permalink) Old 03-27-2015, 07:48 PM Thread Starter
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Quote:
Originally Posted by 99bluez View Post
I had the same issue on my '91. My fix was replacing the A/C vacuum control valve. Several vacuum lines are hooked to the rear of it and when you move the selector switch different vacuum lines are used. The valve could also be fine and you could have a leak in the vacuum lines going to the switch. When you move the selector switch on the dash and you hear the "hiss" noise, you are hearing the vacuum control valve.

The part is different on my '91 and your '95. It looks like it would be #16171742 for your '95.
this could be it, even with all the controls turn to the off position I can still hear a faint but consistent air hiss behind the dashboard

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post #6 of 6 (permalink) Old 03-29-2015, 06:29 AM
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get a vacuum pump,and check each vacuum line to see which one do not hold,vacuum,and that is the bad actuator ,or line

when you don't know what to do,do what you know
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