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On a 2003 A208/A209 clk430 convertible how do you replace…

On a 2003 A208/A209 clk430...
On a 2003 A208/A209 clk430 convertible how do you replace the evaporator temp sensor. I have the new part.I have hot air with AC on and my diagnostic sensor readings are no error codes: w
1.103
2. 107
3. 112
4. 103
5. 103
6. 228
7. 9......while driving on freeway
8. 107
9. No value
10. 0.8
20. 6.0
21. 39
22. 114
23. 0
24. 14.3
40. 8
41. 5
42. 248
43. 14I CLEANED the duo value parts just removing top half and replaced the rubber diaframBecause it seems to have freom with increased pressure while driving i am assuming compressor is working. There seems to be change in rpm w ac on. Also one of the auxillary cooling fans was changed.So i am hoping its the the evaporator sensor.Do you agree and do you have instructions with pics maybe.Thanks!!!!!
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Answered in 14 hours by:
9/14/2018
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 57,141
Experience: Bosch Certified Master Tech. Over 35 years experience.
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Hi Walter, it does not look like there is a problem with the evaporator temperature sensor. If you notice, the sensor is reading 103F, the same as the heater core. If the a/c is blowing warm I would expect the evaporator sensor to read about the same as the heater core. I suggest you have your a/c system evacuated and recharged and have a system pressure test performed. I'm thinking you may have a bad a/c compressor or expansion valve. If you want to try a new sensor it is located in the evaporator case on the driver's side. I've attached a picture of the location below. The sensor is accessed from underneath the dash.

Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 57,141
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified
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Customer reply replied 4 years ago
Ok. I noticed the freon pressure does change from idle to driving or from 4 to 14 and it will blow cool if its cool outside. I live in the desert. I already bought the sensor.I was trying to. Give a bonus but that option did not appear just rating
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

Thank you! I'm leaning more towards low refrigerant or a weak compressor.

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