Overheating, cooling fans not turning on

2000 PONTIAC MONTANA
178,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
Avatar
SCOTT BLUE
  • MEMBER
  • 1 POST
I have the vehicle listed above that gets hot and the fans which are new don't come on.I have replaced the radiator and the fans and the thermostat and the coolant temperature sensor, the water pump is about a year old, dose not leak a drop and replaced the 3604 relays.still no fans. I am thinking it was the PCM fan control all along. what are your thoughts?
Jul 16, 2021 at 6:22 AM
Avatar
SQM
  • ✓Experienced Mechanic
  • 6,383 POSTS
Hello,

Have you got a chance to check all the wirings?
As you have already changed most of the components, checking all the wiring should be the next step.

https://youtu.be/41GzoW4cR18


I have attached wiring diagrams for your vehicle.

Please let me know if you have any questions.

Thank you.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Jul 16, 2021 at 6:41 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
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 new question

Frequently Asked Problems for This Vehicle