86' vette a/c not blowing cold or hot just vent air - Forums - Official C4 Vette Registry

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C4 Cooling and Heating Systems

86' vette a/c not blowing cold or hot just vent air (1/3)
5/31/18 2:47pm

CaliC4
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Joined: 5/31/2018
Posts: 1

hi guys the a/c in my corvette is not working properly. i have the C68 digital�system and everything seems to work (display, buttons). anyway i cannot adjust the temperature. no matter what degree i choose it remains the same temperature. it is not getting any colder or any hotter. does anyone know what is wrong? thanks for your support!!! Daniel

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Re: 86' vette a/c not blowing cold or hot just vent air (2/3)
6/1/18 10:13am

Atchafalaya
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Atchafalaya Basin, LA - USA

Vette(s):
Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe

Joined: 3/20/2009
Posts: 507

Do you know if the compressor clutch is even engaging?

Low pressure switch will keep the compressor from working if your unit is low on refrigerant.

If you don't know how to check, have a mechanic friend check for you, or go to a shop you trust.

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Re: 86' vette a/c not blowing cold or hot just vent air (3/3)
6/8/18 9:58am

ratfink18
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powhatan, VA - USA

Vette(s):
89 white bik top blk int.auto.

Joined: 4/12/2015
Posts: 12

Good solid advice,working on an a/c can be dangerous work.It all starts with the clutch engaging,must have 12 -14 volts on the clutch.

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