| Dash Air trouble [message #304451] |
Thu, 28 July 2016 15:57  |
Bob Solomon
Messages: 13
Registered: October 2013
Location: Torrance, Ca
Karma: 0
|
Junior Member |
|
|
Anyone with experience on the dash air not shutting off the heater. I suspect that this is a vacuum problem, as the compressor clutch comes on and the system is fully charged, but only hot air is coming out. ??
|
|
|
|
| Re: Dash Air trouble [message #304457 is a reply to message #304451] |
Thu, 28 July 2016 17:32  |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
|
Senior Member |
|
|
Make sure the blend door cable is operating the door. The slave lever is on the plenum box outside. The hot water shut off valve is only activated when in recirculate mode, so many have installed a shut off valve in the heater hose to positively stop the hot coolant flow through the heater core.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
| Re: Dash Air trouble [message #304459 is a reply to message #304457] |
Thu, 28 July 2016 17:37 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
|
Senior Member |
|
|
If the cable is not moving the lever outside, the plastic retainer on the inside (control)end of the cable may have broken and the cable sheath is just moving with the core and not transferring the motion to the outside end.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
| Re: Dash Air trouble [message #304482 is a reply to message #304451] |
Thu, 28 July 2016 23:38 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
|
|
There is also a screw clamp that hold the sheath of the cable. It is located under the hood, on the driver's side of the heater box right next to the bell crank that the cable is suppose to move.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
|
|
|
|
| Re: [GMCnet] Dash Air trouble [message #304627 is a reply to message #304582] |
Sun, 31 July 2016 10:10 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
|
Senior Member |
|
|
In time we wasted few hours trying to figure out a cooling issue.
That evening I went out to check it out myself and saw that the compressor was working but only hot air came out.
It was a Vintage unit and the heat valve was instAlled backwards which allowed hot water to flow, it was peer powering the cool air
Sent from my iPhone
> On Jul 30, 2016, at 9:03 AM, larry.whisler wrote:
>
> FWIW, if the hot water shut off valve has not been replaced recently,
> I would replace it since it is probably allowing hot water
> to circulate through the heater core.
>
> A rather easy and inexpensive job and your a/c cooling will improve.
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
