Carb fan & temp switch

[B1oodyBuzzard]

hoping to figure out what plug on the harness goes to the temperature switch to actuate the carb fan. I had hoped my Feb80 FJ40 matched a 82 I got but the plug from the 82 doesn’t match my 80 harness.

I’ve researched off and on and seen a lot of threads on the carb fan but haven’t figured everything out.

Good info here:

Carb Cooling Fan

 

[charliemeyer007]

I'm so thankful my 72 has none of that stuff to figure out. Good luck. I'd start with jumpers to make sure the fan runs when it has power.

 

[B1oodyBuzzard]

It’s one of those things that’s ate at me for awhile but isn’t urgent, at least in my case. My original sensor was removed during desmog

 

[B1oodyBuzzard]

Picture of the plug that came off the 82 temp switch.

 

[John Smith]

If you are missing the "sensor", simply connect the sensor wire to ground. When you turn off the truck, the fan should run for around a half hour. If that doesn't happen, your fan, wiring, or computer will be bad. In the summer I ground the wire for fan, in the winter I leave it disconnected. Been working for years like this.

 

[B1oodyBuzzard]

If you are missing the "sensor", simply connect the sensor wire to ground. When you turn off the truck, the fan should run for around a half hour. If that doesn't happen, your fan, wiring, or computer will be bad. In the summer I ground the wire for fan, in the winter I leave it disconnected. Been working for years like this.

I’m wanting to identify what plug on the harness side of my 1980 would connect to the pigtail that connects to the sensor. Care to provide a picture?

 

[MOTOV8R]

This is everything that came out of my 79 for the carb fan. That single wire connector in the middle of the pic is the one that is used for the temp sensor.

 

[B1oodyBuzzard]

Thanks. That looks to confirm what I got here with the rectangle plug and blue wire. What was the reason for removing, efi?

 

[1MOA]

Do you have trouble starting the truck after the engine is hot?

 

[MOTOV8R]

Thanks. That looks to confirm what I got here with the rectangle plug and blue wire. What was the reason for removing, efi?

Yes, installed a sniper.

 

[B1oodyBuzzard]

Found in this thread.

Post in thread 'The infamous carb cooling fan'
The infamous carb cooling fan - https://forum.ih8mud.com/threads/the-infamous-carb-cooling-fan.888003/post-14533992