What is this?? (3 Viewers)

[69FJ40NJ]

I was poking around the engine this weekend connecting a new ground wire from the battery to the fender and another from the block to the frame, and I found this. I have a sbc 350 in my FJ40 and this was wedged between the back of the alternator and the passenger side valve cover. I never saw it before since it sits under the AC lines. It was not connected to anything. There are two wires coming out of the back, one of the spring loops goes between the two wires. The wires go into a wire loom and heads to the fire wall.

Is this some kind of sensor left over from the original Toyota engine?

The wiring in the rig is a complete mess.

Thanks
DM3

 

[charliemeyer007]

Looks and sounds like a capacitor. Could be used to reduce ripple in the charging system and or static in the radio.

You should look at the wiring diagram for your year/market and look for something that has those 2 wire colors.

 

[Engineer8000]

Does your truck have an electric radiator fan? Maybe a thermo disc switch for an old system abandoned in place?

 

[69FJ40NJ]

Does your truck have an electric radiator fan? Maybe a thermo disc switch for an old system abandoned in place?

It does, but it is switched on the dash, and this is not long enough to reach the radiator location.

 

[archie73]

It does, but it is switched on the dash, and this is not long enough to reach the radiator location.

Does it reach the block? It wouldn’t need to reach the fan, just a relay to turn the fan on. Just a thought

 

[69FJ40NJ]

Does it reach the block? It wouldn’t need to reach the fan, just a relay to turn the fan on. Just a thought

So I assume it is not connected if it is switched on the dash, because the truck will over heat if I don't turn the switch on.

 

[archie73]

So I assume it is not connected if it is switched on the dash, because the truck will over heat if I don't turn the switch on.

You could be right. Some people, who envision water crossing, will wire a switch in to turn the fan off from the comfort of the driver seat. I’m not saying that is what you have, just a possibility

 

[69FJ40NJ]

So I stopped by the local hot rod shop this morning, who if familiar with my two toys. He believes it is a sensor that was part of the original Toyota engine and not part of the SBC engine. Since it was wrapped into the existing wire loom, they just left it.

Since the wiring is a total mess, I will be removing the loom protection cover and the electrical tape on all the wires in the engine compartment. Hopefully this will solve the mystery, and also the problem of my loss in voltage between the battery and the coil.

 

[69FJ40NJ]

I decided to chase more abandoned wires today and found that 'sensor' in the engine was attached to this under the dash.

What is the other thing?

I pulled out 30 feet to unconnected wiring today, what a mess.

 

[charliemeyer007]

That looks like a CB radio cable antenna connection, would have a round hole like 1/8". If it has a like a 1/8" square inside drive it could be a speedo sensor for like cruise control.

 

[45Dougal]

I decided to chase more abandoned wires today and found that 'sensor' in the engine was attached to this under the dash.

What is the other thing?

I pulled out 30 feet to unconnected wiring today, what a mess.

I have a bucket full of wiring that I removed. Sounds like you're going in the right direction
Looks like an RF connector to me. CB or police radio - where did it come from?

 

[69FJ40NJ]

I have a bucket full of wiring that I removed. Sounds like you're going in the right direction
Looks like an RF connector to me. CB or police radio - where did it come from?

If you mean the wires, it was near where the radio antenna would be mounted. Out it comes next weekend.

 

[alkarich]

The one part looks like a broken Cole Hersee toggle switch.
The toggle can be a weak spot.

They make switches with 2,3,and 4 wires depending on the application.

Maybe for an electric fan?

 

[69FJ40NJ]

The one part looks like a broken Cole Hersee toggle switch.
The toggle can be a weak spot.

They make switches with 2,3,and 4 wires depending on the application.

Maybe for an electric fan?

View attachment 3596248

That is it, thanks! Will trace the other two wires and see where they go this weekend.

 

[alkarich]

Glad to help. Good luck