PeachParts Mercedes-Benz Forum - View Single Post

Bigdaddybenz · #10 06-18-2006, 11:03 PM

Hi Matt!

When I accessed the "P-1/P-2" values they were indicated as follows:

P-1 = 127
P-2 = 152

As per your advice I reset the P-1 value to: 40 and the P-2 value to 16.

As a result, I recovered my "horozontal arrow" option on the vent display area.

STILL, my left vents were putting out semi-cool air while my right vent was putting out ice cold air while both sides were in the AUTO/Lo mode.

I recorded the following values while using the test procedures from Steve's article:

1 = 30
2 = 45
3 = 25
4 = 22
5 = 23
6 = 93
7 = 12
8 = 53
9 = 04
10 = 6.0
11 = 2.5
12 = 4.2
20 = 2.0
21 = 07
22 = 00
23 = 00
24 = 13.1
40 = 71
41 = 36
42 = 40 <------ This number reflects the P-1 value as it changed accordingly.

Here's a real twister: The ONLY fault code that I have is ( I don't remember the exact nomenclature) as per the chart: "Non-American Fault"

I believe that I am STILL low on freon but the fluctuating reading that I get on #7 (which has been consistently 12-14bar, but has been as low as 9 bar) concern me.....

If I were to go the old fashioned route and dropped a gauge on the low side of the AC system, what type of pressure should I be looking for????

Once again, thanks BIGTIME!!!!