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  1. 2000 ML 320 code P0446

    W163 M-Class
    I have changed out the gas cap first - forgot to mention that! where is this valve located?
  2. 2000 ML 320 code P0446

    W163 M-Class
    I have tried everything I can think of to find problem! I checked all vacuum lines for leaks, replaced the Regeneration purge vacuum sensor and still getting the code! Any ideas would be helpful!
  3. Heater Problems/ Blend Motor.

    W163 M-Class
    I did everything you suggested and it worked! I had not connected all the switches last week and today after connecting them it started working! Thanks again for your valuable info!
  4. Heater Problems/ Blend Motor.

    W163 M-Class
    I finally have it working and now I need to put the dash back on! I also want to thank you all for the help and comments!
  5. Heater Problems/ Blend Motor.

    W163 M-Class
    Thank you for your info! I removed the Dash completely which gives better access! Still having a problem with getting the blend motor to actually work! It stays at Hot! However, Witek_M has helped me in trying to solve My problem! Have a Happy Thanksgiving
  6. Heater Problems/ Blend Motor.

    W163 M-Class
    Just wanted to thank you again for your help in solving my problem! I will try working on it again Saturday! I also wish you a Happy Thanksgiving!
  7. Heater Problems/ Blend Motor.

    W163 M-Class
    Tried connecting fog light switch and turning hot to cold and reverse - Blend motor dies
  8. Heater Problems/ Blend Motor.

    W163 M-Class
    I completely removed the dash and removed the blend motor and replaced it and when I checked it it moved to Hot and stayed there!!
  9. Heater Problems/ Blend Motor.

    W163 M-Class
    I have checked what I assume is the interior temp sensor located on the heater box. In front and it is connected! I have a photo of it However, I have no idea on how to post it in this discussion!
  10. Heater Problems/ Blend Motor.

    W163 M-Class
    It did not move in any direction it remained in same position! I will recheck the temperature sensor I do not remember disconnecting it! Thank you for for the fast reply, I will attempt to check the sensor connection today if not it will be Friday! And tell you what I found! PS: Heater is in...
  11. Heater Problems/ Blend Motor.

    W163 M-Class
    I have a 2000 MB 320ML with only 107,050 miles. I had only Heat and read about changing the Blend Motor. I ordered a New Bend Motor and new Plastic Linkage and installed the Motor and linkage. No movement by the motor when the manual Blend Control switch was moved in any direction. Replaced...
  12. Heater Problems/ Blend Motor.

    W163 M-Class
    I have a 2000 MB ML 320 and I have replaced the Blend Motor, the Manual Controls and the plastic linkage and I still cannot get the Blend Motor to work. I removed the old motor and tried jumping #5 and #6 and it worked on the bench, put it back in the car and zilch. Anyone out there have any...
  13. 2000 MB Ml320 Cdoe P0446 and codes P0170 and P0173

    W163 M-Class
    I will try that tomorrow and look for the STFT and LTFT values!
  14. 2000 MB Ml320 Cdoe P0446 and codes P0170 and P0173

    W163 M-Class
    I have a U480 scanner and I went to O’Riellys and they came up with same codes!
  15. 2000 MB Ml320 Cdoe P0446 and codes P0170 and P0173

    W163 M-Class
    I replaced the MAF, and I also replaced the Brake pedal switch and still have the codes. I just bought this 320 with 106556 Miles and am having a problem on what to do next. I have the BAS ESP lights as well as the Engine Light on Dash. Other than these problems Car runs and drives great...
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