'94 with AC issues

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Apr 23, 2018 | 07:36 PM

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

Posts: 1,396

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From: Plainfield IN

'94 with AC issues

Has freon, fuses are all good - compressor is working - - - BUT blowing out warm air - no codes!
HELP!

Last edited by BLUDICE; Apr 23, 2018 at 09:13 PM.

Apr 25, 2018 | 07:56 AM

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

Posts: 1,396

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From: Plainfield IN

No one has any ideas??

Apr 25, 2018 | 08:54 AM

ls777z

Drifting

Joined: Nov 2015

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From: Clay New York

Condenser maybe? I know you would probably prefer to not take it someplace but some thing's are beyond us mere mortals...

Apr 25, 2018 | 10:09 AM

-=Jeff=-

Race Director

Joined: Mar 1999

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From: Bartlett Illinois

Assuming C68.. Have you done an A/C reset? disconnect battery for 30s.. reconnect, turn key to on (don't start) wait for the Blend door to self calibrate, then start, check to see if blows cold and Compressor kicks on

Apr 25, 2018 | 11:47 AM

bac22

Le Mans Master

Joined: Feb 2000

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From: Epping NH

Confirm the clutch is actually working on the condenser, it's driven by the accessory belt...you can see it cycle on/off when cold air is called for.

Apr 25, 2018 | 12:51 PM

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

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From: Plainfield IN

Quote:

Originally Posted by bac22

Confirm the clutch is actually working on the condenser, it's driven by the accessory belt...you can see it cycle on/off when cold air is called for.

yep clutch is working -

Apr 25, 2018 | 12:53 PM

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

Posts: 1,396

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From: Plainfield IN

Quote:

Originally Posted by -=Jeff=-

I did the battery disconnect last nite - but have not started the car yet - I'll do that tonite

Apr 25, 2018 | 12:58 PM

-=Jeff=-

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Joined: Mar 1999

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From: Bartlett Illinois

how often does the clutch cycle on MAX AC?

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Apr 25, 2018 | 07:21 PM

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

Posts: 1,396

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From: Plainfield IN

Quote:

Originally Posted by -=Jeff=-

how often does the clutch cycle on MAX AC?

Just a couple seconds - I'm concern - but we are in the 60's here - did blow some cool air when I started it - didn't have time to take it for a drive so -----

Apr 25, 2018 | 07:49 PM

#10

-=Jeff=-

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From: Bartlett Illinois

What settings did you have on the control unit when it was cycling

Apr 25, 2018 | 08:16 PM

#11

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

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From: Plainfield IN

Quote:

Originally Posted by -=Jeff=-

What settings did you have on the control unit when it was cycling

auto w/ temp @ 60 degree - fan @ 10

Apr 25, 2018 | 08:57 PM

#12

-=Jeff=-

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Joined: Mar 1999

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From: Bartlett Illinois

In auto mode (recirculated) 60 deg, it should not cycle much if at all. If it is just on for 2seconds you are low on refrigerant

Last edited by -=Jeff=-; Apr 25, 2018 at 08:57 PM.

Apr 30, 2018 | 02:18 AM

#13

corvette95

Melting Slicks

Joined: Jul 1999

Posts: 3,214

Likes: 101

From: Decatur, Alabama

Quote:

Originally Posted by BLUDICE

Has freon, fuses are all good - compressor is working - - - BUT blowing out warm air - no codes!
HELP!

Manual a/c or C68. Blend door motor stuck? Remove the 3 7mm screws with hood open and have assistant move a/c from 60 to 90 and verify you see the blend door move. If not you must can spray some wd40 or similar in the entire area with the movable door and wait a few hours. You can gently try to pry it waiting doesnt work. After that , could be actual blend door motor or heater box. With motor /ignition off you can gently move the motor by hand. See you FSM if needed

Apr 30, 2018 | 02:52 AM

#14

ETM

Melting Slicks

Joined: May 2005

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From: Folsom Ca

I had similar symptoms and it turned out to be two hose that were leaking pretty bad.

Apr 30, 2018 | 10:16 AM

#15

Silver85

Burning Brakes

Joined: Nov 2016

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From: Buchanan GA

Quote:

Originally Posted by -=Jeff=-

In auto mode (recirculated) 60 deg, it should not cycle much if at all. If it is just on for 2seconds you are low on refrigerant

+1 A set of gauges would come in handy here. Low refrigerant charge or a restriction in the circuit can cause short cycling.

Last edited by Silver85; Apr 30, 2018 at 10:16 AM.

May 1, 2018 | 06:49 PM

#16

BLUDICE

Thread Starter

Drifting

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From: Plainfield IN

Heat works fine - after sitting a few days it blows cool air - gradually gets warmer.

May 1, 2018 | 06:52 PM

#17

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

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From: Plainfield IN

I've added some Freon - compressor still short cycling

May 4, 2018 | 11:26 AM

#18

Silver85

Burning Brakes

Joined: Nov 2016

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From: Buchanan GA

Quote:

Originally Posted by BLUDICE

I've added some Freon - compressor still short cycling

How much did you add? Did it improve at all or stay the same?

May 4, 2018 | 11:35 AM

#19

-=Jeff=-

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Joined: Mar 1999

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From: Bartlett Illinois

What are your gauge readings?

May 4, 2018 | 04:16 PM

#20

BLUDICE

Thread Starter

Drifting

Joined: Apr 2014

Posts: 1,396

Likes: 129

From: Plainfield IN

Quote:

Originally Posted by Silver85

How much did you add? Did it improve at all or stay the same?

A DIY can of Freon - no change at all

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