Help, fan won't come on. 86 celebrity

1986 CHEVROLET CELEBRITY
Avatar
GMLOVER
  • MEMBER
  • 5 POSTS
I have an 86 Chevy celebrity 2.8 v-6 VIN W.
I just replaced cracked heads. Engine starts and runs fine. No engine light.No codes. Thermostat ok. Electric fan won't start at all. Temp light comes on.Fuse ok.No working fan with a/c on.

Installed 3 different relays & fan switches, no fan. Back probed and grounded red terminal on relay and got a light.Grounded green terminal on relay and fan turns on. Manual says to check fusible link C next to starter. Located them but they aren't labeled A,C or F. Does anyone know how to id fusible link C, diagnose it & replaced it. Something else I should check?

Thanks for your help.
Jan 24, 2007 at 1:39 AM
Advertisement
Avatar
CARUNDELL
  • ✓ASE Certified Mechanic
  • 602 POSTS
  • ASE Certified Mechanic
Hey GM, Your relay test just ruled out the fusible links ....the fan came on when grounding green terminal ...There is a cooling fan temp switch located on the backside of the motor .....looks like its close to the coolant temp sensor ......maybe this has failed or wasn't hooked up? Let me know! Chris


https://images.2carpros.com/forum/automotive_pictures/47722_celeb_1.jpg

Jan 24, 2007 at 4:55 AM
Avatar
GMLOVER
  • MEMBER
  • 5 POSTS
Hey GM, Your relay test just ruled out the fusible links ....the fan came on when grounding green terminal ...There is a cooling fan temp switch located on the backside of the motor .....looks like its close to the coolant temp sensor ......maybe this has failed or wasn't hooked up? Let me know! Chris


https://images.2carpros.com/forum/automotive_pictures/47722_celeb_1.jpg

[/quote:4ca6598f6c] Cris, Thank you for your response and the image. I did replace the switch and relay with used parts. I installed 3 different relays and 3 switches. Can you tell me how to test thouse parts? If they test ok, how can I test & verify the computer is sending signal? Thanks
Jan 25, 2007 at 1:47 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.