A/C problem

[grizzle]

Now that the temp is getting on up there, the a/c in my 96 RR 4.0se has started giving me a problem. The air flow is not as strong as it was and in the screen there is an icon of a book and an "!", The manual doesn't address either icon. It is still blowing cold air, just not very much.

 

[joey]

Is the fan still working well or is it the temp that seems to be down?

If temp, have you checked the R134a levels in the system?

 

[grizzle]

No the temp is still cold as ever, just a decrease in air flow.

 

[joey]

Symptom - Blower Motors Inoperative or Slow Running.
POSSIBLE CAUSE REMEDY
1. Blown fuse. 1. Check and renew fuse 42 or 43.
2. Loose electrical connections. 2. Check and tighten all relevant connections.
3. Worn internal motor
components.
3. Renew blower motor/s.

 

[grizzle]

changed out fuses, so far so good. will see what happens now.

 

[grizzle]

okay, still having same trouble - tell me more about this blower motor. Where is it? and how difficult is it to change out?

 

[joey]

Hope this helps

www.cellularamps.com/blower.jpg
www.cellularamps.com/blower1.jpg

 

[chizel]

Here is how you check for faults:
1 - Turn ignition off
2 - press and hold AUTO and AIR DIST
3 - while holding those buttons down switch ign ON
4 - fault code is shown in the left window, result in the right.

00 means no faults
11 in car temp sensor fault
12 ambient sensor fault
13 thermistor fault
14 heater coolant sensor fault
21 sunsensor fault
22 sun sensor fault
31 left servo motor
32 right servo motor
33 distribution servo motor

 

[grizzle]

Symptom - Blower Motors Inoperative or Slow Running.
POSSIBLE CAUSE REMEDY
1. Blown fuse. 1. Check and renew fuse 42 or 43.
2. Loose electrical connections. 2. Check and tighten all relevant connections.
3. Worn internal motor
components.
3. Renew blower motor/s.

Joey, please advise how to determine blower vs blend motor failure - looks like there are several motors in this system.

 

[grizzle]

I tried this, but couldn't get a fault reading. any other suggestions?



1 - Turn ignition off
2 - press and hold AUTO and AIR DIST
3 - while holding those buttons down switch ign ON
4 - fault code is shown in the left window, result in the right.

00 means no faults
11 in car temp sensor fault
12 ambient sensor fault
13 thermistor fault
14 heater coolant sensor fault
21 sunsensor fault
22 sun sensor fault
31 left servo motor
32 right servo motor
33 distribution servo motor[/QUOTE]