Ambient temperature sensor?

Tiny
BHAMDOC1973
  • MEMBER
  • 2005 BMW 325
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 166,000 MILES
Can this sensor, if bad or cut affect engine temperature or cluster needle in any way?
Tuesday, April 15th, 2025 AT 1:53 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,108 POSTS
Hi,

If you are referring to the outside ambient air temperature sensor, no, it wouldn't affect the engine temperature or cluster gauge. The outside ambient temperature sensor is connected with a separate ground (analog ground) and a sensor line (analog positive) to the instrument cluster and functions in an on/off every minute.

What is happening with the vehicle? Are you having an overheating issue?

Let us know.

Take care,

Joe
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Tuesday, April 15th, 2025 AT 6:24 PM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,842 POSTS
Turned out one of the upper hoses going to the expansion tank wasn't fully in and leaking. Thanks
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Friday, April 18th, 2025 AT 11:38 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,603 POSTS
JACOBANDNICKOLAS is one of our best! Glad you could get it fixed, thanks for letting us know.
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Monday, April 21st, 2025 AT 9:36 AM

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