2007 Volvo S40 ambient temperature sensor

Tiny
GERMAN1954
  • MEMBER
  • 2007 VOLVO S40
  • 1.8L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 132,000 MILES
My a/c works fine at times, but after 30 minutes specially when is hot outside it only blows regular warm air, I was told that it is the ambient temperature sensor, I understand that it is located by the rear view mirror, is that correct?
somebody else told that it is located on the outside mirror(left side)
any suggestions? Please I would really appreciate your help on this matter.

Thanks
German
Wednesday, June 24th, 2015 AT 3:54 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 34,170 POSTS
What you described is typical of low refrigerant charge, and when someone charges the system after it was opened for part replacement and they didn't pump it into a vacuum first to remove the humidity and moisture. Either way, my guesses are as valid as a temperature sensor. You need to have the problem properly diagnosed. Sensors in the mirror are typically for the information center. Temperature sensors for the AC system are inside the car.
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Wednesday, June 24th, 2015 AT 10:19 PM

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