E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

98 E320 Left Vent Blowing Warmer

Old Jun 21, 2017 | 06:22 PM
  #1  
Brian Diemunsch's Avatar
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96 E320, 98 E320, 99 E320
98 E320 Left Vent Blowing Warmer

Hey guys,

My 98 E320 seems to be having an ac issue. My left center Vent is blowing warmer air then the right center Vent when the ac is on. I checked for any DTC's and their was none. I also checked the 1-8 values and they are:

1-25
2-23
3-10
4-7
5-16
6-98
7-14 (see note below)
8-53

I was looking at the values while driving and monitored #7. Driving in stop and go traffic I noticed that while driving at 40mph #7 goes down to like 6-7. When I'm sitting at a red light #7 goes back up to about 15-16. Is this normal? Any help would be greatly appreciated cause it freaking hot. Thanks!!
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Old Jun 21, 2017 | 07:12 PM
  #2  
kajtek1's Avatar
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1922 Ford Model T / no OBD
Your engine also runs at 98C, what is hot.
Could be the computer turns off AC to prevent engine overheating.
Check your cooling system before worrying about AC
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Old Jul 2, 2017 | 10:51 AM
  #3  
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W210 E320 AVANTGARDE 1998
Originally Posted by Brian Diemunsch
Hey guys,

My 98 E320 seems to be having an ac issue. My left center Vent is blowing warmer air then the right center Vent when the ac is on. I checked for any DTC's and their was none. I also checked the 1-8 values and they are:

1-25
2-23
3-10
4-7
5-16
6-98
7-14 (see note below)
8-53

I was looking at the values while driving and monitored #7. Driving in stop and go traffic I noticed that while driving at 40mph #7 goes down to like 6-7. When I'm sitting at a red light #7 goes back up to about 15-16. Is this normal? Any help would be greatly appreciated cause it freaking hot. Thanks!!
did you change all four interior-filters,(the two carbonfilters bottom passengerssite and the two behand the glove box)?
If you haven't done this for a while they do get really disgusting and won't let much air enter in your cabin,I realised that those filters where the reason I head headaches and got tired in the car.
on 7 you see the pressure,that varies,=normal.
Furthermore I changed a NTC-sensor near the midsection right of the driver,hard to find,but there is info on the web.it looks like a small black banana,a miror is handy!
Hope you manage,I had problems with my E320 W210 AG a month ago,a moist warm air came out after the corner of the street.
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