Where is AC high side service port on E300 Turbodiesel?
05-25-2013, 12:00 PM
#1
Newbie
Thread Starter
Join Date: May 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
1998 E300 Turbodiesel
Where is AC high side service port on E300 Turbodiesel?
I'm trying to diagnose an air conditioning problem on my 1998 E300 Turbodiesel. Will run the diagnostic procedures found on this forum (thanks!), but also would like to get a direct look at the pressures in the system. For the life of me I cannot find the high side service port! The low side was easy to find on a refrigerant line - but where is the high side port located?
05-25-2013, 12:09 PM
#2
Newbie
Thread Starter
Join Date: May 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
1998 E300 Turbodiesel
Ran the internal diags with the following results:
1 - 71
2 - 66
3 - 102
4 - 102
5 - 67
6 - 179
7 - 04
8 - E
Error codes:
Initially the system had these codes:
E B1233
E B1231
E B1233
E FF
After reset, only the following 2 error codes are reported:
E B1233
E FF
Will search around to see what these codes mean, but if anyone has any insight it would appreciated!
1 - 71
2 - 66
3 - 102
4 - 102
5 - 67
6 - 179
7 - 04
8 - E
Error codes:
Initially the system had these codes:
E B1233
E B1231
E B1233
E FF
After reset, only the following 2 error codes are reported:
E B1233
E FF
Will search around to see what these codes mean, but if anyone has any insight it would appreciated!
05-27-2013, 02:32 AM
#3
MBWorld Fanatic!
Join Date: Jan 2007
Location: Sydney, Australia
Posts: 1,152
Likes: 0
Received 29 Likes
on
23 Posts
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
take the fan shroud off in front of the radiator (for the electric fans). the HP valve is on the right hand side (looking at the car).
05-27-2013, 07:00 AM
#4
Newbie
Thread Starter
Join Date: May 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
1998 E300 Turbodiesel
Thanks! I was able to find info on interpreting the diag codes, it looks like the refrigerant temperature sensor may be bad (codes 8 E and E B1233), though I don't know if that's sufficient to cause a "no cooling" effect in these systems. Will the check high pressure side now that we know where to hook up the gauge set, the low side looked OK but that's only half the story of course.
