Question about 1981 Chevrolet Corvette

2 Answers

I have a 1981 corvette and the heat/a/c stop working

The clutch on the a/c wont come on and the air wont blow out the vents but you can cross the relay over with a screwdriver and it will come on

Posted by Anonymous on

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 5,525 Answers

It's probably a fault in the control unit on the dash. I believe that would be where the signal originates to turn that relay on. I assume you have already tried a different relay to see if your old one was bad?

If you can afford a corvette, you could afford a factory service manual for it, the number one source for everything mechanical and electronic-electrical about it. There must be lots of them on Amazon and eBay.

Posted on Sep 22, 2014

Ad
  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

If you add to much freon the air compress won't enage and your a/c want come on.

Posted on Sep 22, 2014

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009

  • 37 Answers

SOURCE: PROBLEM WHEN SELECTING THE DIRECTION FOR THE AIR

Sounds like you have a supply vacuum problem. When you lose supply vacuum to the control head it defaults to defrost.

Posted on Mar 13, 2009

emissionwiz
  • 85161 Answers

SOURCE: air stops blowing through the vents when accelerating

u have a loss of vacuum to the ac mode control switch, this switch applies vacuum to diff vacuum motors to move air to diff outlets, dash, floor, defrost etc. either the vacuum line or vacuum resivior at the engine is leaking or the mode control is leaking vacuum.

Posted on Aug 14, 2009

  • 540 Answers

SOURCE: 2005 tahoe no air blowing

as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..

Posted on Oct 13, 2009

  • 41 Answers

SOURCE: our 1998 buick lasabre air condioning will not

ck to see if your vaccum hose if broken at the engine vaccum connection, it may have a vaccum hose split or a bad vaccum switch/actuator, if it has manual a/c, if it has electronic a/c then your mode actuator is not working.

Posted on Aug 10, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

My Air Cond. cold Air blows out the feet vents, but not the dash vents...WHY??


You most likely have a vacuum leak not allowing the vacuum operated vent/duct inside your instrument panel to operate. Check all of your rubber vacuum hoses in the engine compartment for leaks, cracks or breaks .

Jul 26, 2014 | 1980 Chevrolet Corvette

1 Answer

1995 corvette coupe


Can you get the heat or any settings that will get air to blow out of those vents?
Thanks,
Lee

Jul 08, 2008 | 1995 Chevrolet Corvette

1 Answer

Heat and ac stopped working in 05 kia sedona


check that the heater control (tap ) is being turned on by the controls.. Have an accredited ac mechanic check the ac system .

Jan 07, 2014 | 2005 Kia Sedona LX

1 Answer

I have a 1981 corvette I put freon in it and 1 line is cold 1 line is hot contro l door is closing from hot to cold but will not cool.


Check that your cabin air ducting does not have disconnects and verify the fan is blowing air through the cooling condenser coil. Something may have fallen down through the windshield defroster slots and jammed the fan.

Aug 26, 2012 | 1981 Chevrolet Corvette

1 Answer

I have a 1995 Corvette and when I turn the air conditioner on the dashboard vents does not blow cool air


the a/c control is electric for temp control and vacuum for mode control when a leak occurs it defaults to defrost floor .look for a leak or broken vacuum line first then control panel then mode actuator.

Jul 30, 2012 | 1996 Chevrolet Corvette

1 Answer

The vents on the dash are not working in my 1980 corvette. the fan is working when the heater is on. but can not get the dash vents to blow.


If you have A/C. When you put the heater on defrost it activates the A/C pump so it will not freeze up from not being used. If you don't care about the pump disconnect the plug that engages the clutch on the pump and use a jumper wire to bridge the plug to itself and your defrost should work

Aug 25, 2010 | 1980 Chevrolet Corvette

1 Answer

1981 corvette air conditioner ventilation


hi

this is because
1.there is some blockage in the line comin up and to sides.
2.the selector switch is not properly functioning. the flaps got stuck and it may allows only air to pass through the floor vents.


please vote me if my answer was useful to you.

Jul 12, 2010 | 1981 Chevrolet Corvette

1 Answer

1998 corvette, A/C blows out the defroster but not out the face vents..


I think you have a vacum problem. Check the vacum hose that, I think starts at the rear of the intake manafold
that hose will pass through the fire wall. Check to be sure
that the hose is not split or BENT stopping the vacumn
from getting to the A/C & Heater system.
Part of the job of that hose is to open & close the vents
air direction.

Nov 07, 2009 | 1998 Chevrolet Corvette

1 Answer

Cold Air Not Blowing Through Vents


Your last guess is probably the right one. The deflectors/directors are vacuum controlled and you may have vacuum line either broken or disconnected; these aren't fun to find. I would start under the hood and make sure the vacuum reservoir is intact (have seen them cracked) and then start tracing hoses from there.

Aug 18, 2009 | 1996 Chevrolet Corvette

1 Answer

Heat wont blow through heater or defroster vents


common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500

Not finding what you are looking for?
Cars & Trucks Logo

124 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

Marvin
Marvin

Level 3 Expert

85161 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...