Where is the coolant temperature sensor located?

2002 OLDSMOBILE ALERO
100,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
Avatar
DISTRIMAN
  • MEMBER
  • 1 POST
I can’t find where the coolant temperature sensor is located.

The car is overheating, and the fans aren’t kicking on, at least while idling. If we hit the gas while parked, the car will start to overheat, and the fans still don’t kick on. From what I’ve been reading it seems like it could be the temperature sensor and since it’s a cheap fix I thought I’d try it first. If someone could show me where it’s located that would be very helpful!
Jan 28, 2025 at 7:38 AM
Advertisement
Avatar
STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Yep, that is a good first step, here is the location of the coolant temperature sensor which is towards the rear of the engine. Check out the images (below). Please let us know what happens.
Jan 28, 2025 at 10:34 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.