The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-21-2016, 05:49 PM   #1
PICKMUP
"Trucks with Class"
 
PICKMUP's Avatar
 
Join Date: Jul 2000
Location: OLYMPIA, WA, USA
Posts: 8,158
AC Problem/Question

1979 Chevy C30: When the AC loses Freon pressure, does the entire heater & blower stop working? Including the control of vents, heat, etc? Mine seems to. thanks, frank
__________________
Email: frankeham@comcast.net
Phone: 360-956-7170
PICKMUP is offline   Reply With Quote
Old 04-22-2016, 07:37 AM   #2
Katrina/10
Registered User
 
Katrina/10's Avatar
 
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
Re: AC Problem/Question

Freon should have no effect on the operation of the vents and blower. It just won't get cold.
__________________
Gary

1971 Chevrolet C/10
1951 GMC 100
1977 GMC C15
1955 Chevrolet 3100
Katrina/10 is offline   Reply With Quote
Old 04-22-2016, 07:46 AM   #3
andrewmp6
Registered User
 
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
Re: AC Problem/Question

Yeah you got a blower problem or wiring problem,Like said with no freon youll still have heat and the ac will still blow but never get cold.
andrewmp6 is offline   Reply With Quote
Old 04-23-2016, 10:44 AM   #4
Titomars
Registered User
 
Titomars's Avatar
 
Join Date: Feb 2015
Location: Santa Rosa, Ca.
Posts: 539
Re: AC Problem/Question

Freon will not affect the blower or the vents. The Mode (vent) selection is vacuum controlled on your truck and the blower motor is electrical. all three are not interconnected to work. There are pressure switches in the A/C lines for low freon and for high pressure to cutout the compressor under certain conditions but they do not kill control to the panel inside the truck. If the modes are not working you most likely have a vacuum leak or your multi port valve at the control is not working. the blower could be no power to the switch, the switch, the blower resistor, wiring to the motor, or the motor.
__________________
1977 Chevrolet C/10 Silverado. Step-Side, Factory 454, TH400, 3.73 Posi 12 Bolt.
1975 Chevrolet El Camino. 350, TH400, 3.08 Posi 10 Bolt.
Titomars is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:11 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com