A?C problems,,,help
Thread Starter
Le Mans Master
Joined: Sep 2002
Posts: 9,386
Likes: 0
From: 30 mins north of Charlotte NC
A?C problems,,,help
:confused: ok, i will try to describe the problem i am having with my A/C switch the best i can,,,,,,,,if i need to be more detailed just let me know
with the ignition on (car running or just the switch on), the fan control switch works on low-medium1-medium2-but not high, and when you turn the the fan to off, it blows on low speed. .............Now the whole system will turn off if you put it on off using the A/C- heater wheel. Now If you turn the key to acc the fan motor only works on high speed, when you swich it over to low-medium1-medium2 it just shuts off......i put a new relay on there but still nothing,,,and i took the fan speed selector apart and cleaned it, but still nothing. All my wires look ok from the fusebox to the controls to the fan,,,,,,??im stumped
does anyone have a wiring diagram for a 76, or has anyone had this problem before,,,,,,,,,,,,, :confused:
with the ignition on (car running or just the switch on), the fan control switch works on low-medium1-medium2-but not high, and when you turn the the fan to off, it blows on low speed. .............Now the whole system will turn off if you put it on off using the A/C- heater wheel. Now If you turn the key to acc the fan motor only works on high speed, when you swich it over to low-medium1-medium2 it just shuts off......i put a new relay on there but still nothing,,,and i took the fan speed selector apart and cleaned it, but still nothing. All my wires look ok from the fusebox to the controls to the fan,,,,,,??im stumped
does anyone have a wiring diagram for a 76, or has anyone had this problem before,,,,,,,,,,,,, :confused:
Melting Slicks
Joined: Nov 2001
Posts: 2,214
Likes: 0
From: Casa Grande AZ
Re: A?C problems,,,help (Titanium Rat)
Ok, those are strange symtoms.
I'm not familiar with the later AC systems but maybe they are similar to the older ones.
Is there a fuse holder located near the horn relay under the hood?
If so, that could be the culprit. If not, check all your fuses in the fuse box. If all are good, try to follow the large (probably orange or red) wire from the blower relay back until you find a fuse or link. What I'm trying to find is the power (and fuse) for the hi speed blower. Most times it's a seperate circuit from the other speeds.
I'm not familiar with the later AC systems but maybe they are similar to the older ones.
Is there a fuse holder located near the horn relay under the hood?
If so, that could be the culprit. If not, check all your fuses in the fuse box. If all are good, try to follow the large (probably orange or red) wire from the blower relay back until you find a fuse or link. What I'm trying to find is the power (and fuse) for the hi speed blower. Most times it's a seperate circuit from the other speeds.
Thread Starter
Le Mans Master
Joined: Sep 2002
Posts: 9,386
Likes: 0
From: 30 mins north of Charlotte NC
Re: A?C problems,,,help (lbell101)
Boy do i feel stupid,,,,,,,,,,,,it turns out the ground wire that grounds the heater fan motor is the same one that grounds the wipers,,,(and the same one that does the high speed fan relay),,,,i was going off 78 wiring schematics,,,totally different from a 76,,,,,,,,by mistake, i hooked up the wire i needed grounded, to the non pos side of the starter solenoid,,,Duh,, :crazy: :troll :rolleyes:
