A/C blower pressure
jmkzperez
07-12-2005, 11:08 AM
I figured out why it was blowing hot on one side and cold on the other. Now I need help on why it blows cold air out, but it isn't fast and hard like it was before? Can some one please help?
My email address is: jerry.j.perez@ttu.edu
My email address is: jerry.j.perez@ttu.edu
HotZ28
07-13-2005, 07:20 PM
:confused:
I assume that you have a PA. What year is it? Do you have auto climate control? (ATC) If so, check your codes. If you have the conventional system this does not apply. Sounds like blender door actuators. (code 38 & 40):uhoh:
Auto Climate Control Diagnostics
This procedure will work on 1992-1994 models with ATC, and may possibly also work on 1988-1991 models.
The diagnostic mode also contains a data list mode and an override mode.
Be careful not to select modes 01 or 02, as these are different modes, and may cause problems.
If you suspect you are in the wrong mode, press OFF repeatedly until you exit to normal mode. If the temperature display flashes for 2 minutes when the ignition is turned to RUN, a trouble code is set.
1. Turn ignition to RUN. Press OFF and WARM (temperature up) buttons simultaneously.
2. Watch the segment test, then the trouble codes will be displayed.
3. Code Key:
00 - No codes
10 or 110 - Ambient Temp Sensor circuit open or shorted.
13 or 113 - In-Vehicle Temp Sensor circuit open or shorted.
15 or 115 - LH Solar Sensor circuit open or shorted.
35 or 135 - Data Line failure - HVAC Control Assembly
38 or 138 - Data Line failure - PCM
40 or 140 - Driver Air Mix Motor circuit open or shorted, or not calibrated
48 or 148 - Long Term Freon Loss
52 or 152 - Keep Alive Memory lost; sets with battery disconnected
66 or 166 - Low Freon
A number 1 prefix indicates a history trouble code
4. Press OFF twice once codes are displayed to end diagnostic mode, OR to clear trouble codes, press FAN DOWN three times (make sure 03 is displayed).
Once 03 is displayed, press FAN UP to clear trouble codes. Then repeatedly press OFF to end diagnostic mode.
I assume that you have a PA. What year is it? Do you have auto climate control? (ATC) If so, check your codes. If you have the conventional system this does not apply. Sounds like blender door actuators. (code 38 & 40):uhoh:
Auto Climate Control Diagnostics
This procedure will work on 1992-1994 models with ATC, and may possibly also work on 1988-1991 models.
The diagnostic mode also contains a data list mode and an override mode.
Be careful not to select modes 01 or 02, as these are different modes, and may cause problems.
If you suspect you are in the wrong mode, press OFF repeatedly until you exit to normal mode. If the temperature display flashes for 2 minutes when the ignition is turned to RUN, a trouble code is set.
1. Turn ignition to RUN. Press OFF and WARM (temperature up) buttons simultaneously.
2. Watch the segment test, then the trouble codes will be displayed.
3. Code Key:
00 - No codes
10 or 110 - Ambient Temp Sensor circuit open or shorted.
13 or 113 - In-Vehicle Temp Sensor circuit open or shorted.
15 or 115 - LH Solar Sensor circuit open or shorted.
35 or 135 - Data Line failure - HVAC Control Assembly
38 or 138 - Data Line failure - PCM
40 or 140 - Driver Air Mix Motor circuit open or shorted, or not calibrated
48 or 148 - Long Term Freon Loss
52 or 152 - Keep Alive Memory lost; sets with battery disconnected
66 or 166 - Low Freon
A number 1 prefix indicates a history trouble code
4. Press OFF twice once codes are displayed to end diagnostic mode, OR to clear trouble codes, press FAN DOWN three times (make sure 03 is displayed).
Once 03 is displayed, press FAN UP to clear trouble codes. Then repeatedly press OFF to end diagnostic mode.
jmkzperez
07-14-2005, 09:25 AM
I figured out why it was blowing hot on one side and cold on the other. Now I need help on why it blows cold air out, but it isn't fast and hard like it was before? Can some one please help?
My email address is: jerry.j.perez@ttu.edu
Hey I have a 1999 Park Avenue Ultra, so I don't know if those codes will work.
My email address is: jerry.j.perez@ttu.edu
Hey I have a 1999 Park Avenue Ultra, so I don't know if those codes will work.
HotZ28
07-14-2005, 12:27 PM
On a 99, you need an OB11 scan tool to get the codes.
If your blower is running on high speed and your vent air is low, you would have an actuator or calibration problem.
If your blower is running on high speed and your vent air is low, you would have an actuator or calibration problem.
Automotive Network, Inc., Copyright ©2024