After Long Drive No air in cabin.
08-05-2014, 12:27 AM
#27
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2004 E55
raise fan speed or temp or both
So I have seen the other post such as this matter I am about to describe. I have searched and used the search function of this site.
After a couple of long drives from Seattle to Cali back to back I experienced a problem on both drives. After about 8hr drive or so the air would decrease to almost non existent to the cabin. But you can hear the fan working, and does change speeds when you press recirculate, etc. After shutting the car off for a few minutes the air would once again fill the cabin then slowly the air in the cabin would die down.
So this last trip, I brought it to a shop and we replaced the fan resistors and fan. Took the trip back home to Seattle, and it happened again. So I did some research, and could only find bits an pieces of information.
1. Some claim that it could be just low on freon....
2. Evaporator is freezing up, and an humidity sensor needs to be installed. possible Bulletin on this, but dealership can't find one.
3. Dealership states it's possible that it's the solar/sunload sensor on the hood not properly reading, causing flaps not to close.. etc.
Did anyone ever get a solid answer to a solution to this?
Also the diagnosis menu on the climate control unit, does anyone have a value data?
Most that I can find applies to an older model control unit. Another is, does anyone know how to switch the climate control unit to fahrenheit? Thanks in advance
After a couple of long drives from Seattle to Cali back to back I experienced a problem on both drives. After about 8hr drive or so the air would decrease to almost non existent to the cabin. But you can hear the fan working, and does change speeds when you press recirculate, etc. After shutting the car off for a few minutes the air would once again fill the cabin then slowly the air in the cabin would die down.
So this last trip, I brought it to a shop and we replaced the fan resistors and fan. Took the trip back home to Seattle, and it happened again. So I did some research, and could only find bits an pieces of information.
1. Some claim that it could be just low on freon....
2. Evaporator is freezing up, and an humidity sensor needs to be installed. possible Bulletin on this, but dealership can't find one.
3. Dealership states it's possible that it's the solar/sunload sensor on the hood not properly reading, causing flaps not to close.. etc.
Did anyone ever get a solid answer to a solution to this?
Also the diagnosis menu on the climate control unit, does anyone have a value data?
Most that I can find applies to an older model control unit. Another is, does anyone know how to switch the climate control unit to fahrenheit? Thanks in advance
08-05-2014, 09:20 AM
#28
Super Member
Sounds like you are low on refrigerant. Not unexpected for a 2006 model year.
08-05-2014, 02:00 PM
#29
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E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
There is so much disinformation on this value, it is a reading if high pressure side. Not state of charge.
We have a variable displacement compressor it changes it's displacement by changes in pressures, the changes in pressure are determined by the expansion valve, hence 6-18.
In stop and go traffic on a 95* day the #7 reading will / should fluctuate from 12-18 on that same day on the highway at speed the number numbers could be 8-10.
Now here is what is important, this system only functions with an exact charge!
If the charge is off (+-3oz) it will not be running at its design peak. I have seen too many DIYers buy a can of R134a from Walmart (with sealer-very bad) and proceed to overcharge there system, the problem, they only needed 6 ounces but put in 12 because they relied on the pressure gague to provide state of charge.....wrong,,, there is only one way to be sure your A/C charge is correct take it to a reputable A/C shop and have them recover the R134a in your system and refill your system with the "premeasured" amount of R134a, this is not a DIY you need a modern refergeration equipment to do this. Side note if you have sealer in your system NO A/C shop will recover your tainted R134a yes the recovery machine tests for the sealer,quality and gas makeup of your R134a.
