ECT sensor splicing the new one on the old?

2001 CHEVROLET LUMINA
243,000 MILES • 3.1L • 4 CYL • 2WD • AUTOMATIC
Avatar
ANGIE COUGHLIN
  • MEMBER
  • 1 POST
I am trying to change my ECT sensor, and I do not know what wires to hook where. is there a diagram you could send me that shows which wire goes to which wire?
Sep 29, 2022 at 12:15 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
Hi,

There should be two wires. One is yellow and one is orange with a black tracer. The sensor is basically a resister and receives a low voltage power signal from the PCM. The voltage passes through the sensor and returns to a sensor ground at the PCM. Based on temperature, the resister in the sensor changes the transfer of power.

Okay, why did I say all that? LOL It should work either way you connect the two wires. Power still has to travel through the sensor. I guess you would have rather had me say that first. LOL

If you have a different situation, let me know. Also, the aforementioned wire colors should be the only ones present.

Let me know if this helps.

Take care,

Joe

See pic.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Sep 29, 2022 at 7:16 PM
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.