1991 Chevy Lumina

Tiny
STEVE39
  • MEMBER
  • 1991 CHEVROLET LUMINA
Does anyone know where the temperature control sensor is on a 1991 Chevy Lumina with a 3.1L V-6?

Also need to know where the O2 sensor is on that vehicle too.



THANKS!
Thursday, September 20th, 2007 AT 9:04 AM

4 Replies

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Coolant temperature sensor?
Top left side of engine at coolant outlet.

The o2 sensor is in the exhaust before the converter, below the exhaust manifold.
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Thursday, September 20th, 2007 AT 7:21 PM
Tiny
STEVE39
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Thanks alot Service Writer. Swapped out the easier of the two for now (which was the temp control) and so far the engine is not dying at stoplights - really got to give it a few days though to see if that did the trick. Appreciate your accuracy! Looks like I need to jack the car up and get under the exhaust manifold for the 02 sensor. Anyway, THANK YOU!
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Monday, September 24th, 2007 AT 10:16 AM
Tiny
SERVICE WRITER
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Glad I could help out....I had the easy part!


https://www.2carpros.com/forum/automotive_pictures/30961_bigsmilereptile_6.jpg

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Monday, September 24th, 2007 AT 6:21 PM
Tiny
STEVE39
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Mmm, well I dunno about 'easy', you had the smart part because 80% of this stuff is diagnosis!

Ill keep you posted on that 02 sensor though, I could find out real fast if your right about the 'easy' part!
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Tuesday, September 25th, 2007 AT 1:46 PM

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