![]() |
|
|
|
Registered
Join Date: May 2005
Location: Melbourne, Australia
Posts: 541
|
Help needed troubleshooting air conditioning
Hi All,
I've trying to diagnose my air con woes. Evaporator blower works fine on all speed settings. But: 1. Compressor does not engage 2. Front condenser blower does not work There is no voltage at the compressor, nor the front blower. I've just replaced the relay next to the evaporator to no success. Can someone please help me with what needs to be checked next? Thanks, Adam
__________________
_____________________ '73 RSR Interpretation ---------------------------------- |
||
![]() |
|
Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
|
Quote:
Fuse #2 tends to run hot. Fuse #2 (check for corroded fuse or poor contact). Also, voltage on both sides of the fuse. You may pm me as needed. Good luck, Gerry ![]() ![]()
__________________
1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." Last edited by 86 911 Targa; 12-29-2010 at 10:38 AM.. |
||
![]() |
|
Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
|
Don't know your car, but does it have a Hi-Lo pressure switch for the freon? You might be low on freon.
__________________
Hugh |
||
![]() |
|
Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
|
Here's another thought.
Check the relay located in the smuggler's box. (see pic). If you need to replace, buy this one. ![]() Which provides power to the condenser relay. ![]() Gerry
__________________
1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." Last edited by 86 911 Targa; 12-29-2010 at 10:41 AM.. |
||
![]() |
|
Registered
Join Date: Oct 1999
Posts: 8,673
|
|||
![]() |
|
Registered
Join Date: May 2005
Location: Melbourne, Australia
Posts: 541
|
Thanks for all the replies...
Found the problem. It was the thermostat in the centre console. When I jumpered the connections to bypass the thermostat, everything worked fine. However, I noticed that the voltage to the front condenser blower is only 7 volts. Is this normal? Also, where is the front condenser blower relay? Thanks, Adam
__________________
_____________________ '73 RSR Interpretation ---------------------------------- |
||
![]() |
|
![]() |
Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
|
Quote:
The voltage should be 12-13V Here is your relay/fuse location. Good luck, Gerry ![]()
__________________
1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
||
![]() |
|