Help Identify mystery Hole in tub of Dec 79' FJ40

[ElephantRebel]

Hello Everyone!


I'm trying to identify a hole underneath the drivers seat in the tub of my car. I originally thought it might be drain plug hole but could't find anything on that or the actual plug part. Research is all over the place. An O2 sensor pass though, some Aux wire port. Would anyone have any ideas?

 

[gr8ful]

Aftermarket/PO is my belief. Looks like an aftermarket console. Any chance it has spots for a radio or other power options?

 

[bhsdriller]

only a previous owner will know for sure

 

[iwashmycar]

Road trip pee pee hole?

Any other ones been drilled?, maybe it was just for a drain hole, but then I'd expect multiple ones.

 

[B y r o n]

Because it looks like the edges of the hole are bare metal and not painted, not an OEM hole.

 

[1911]

My 40 is also an 11/79 build, and there is no such hole in my tub.

 

[ElephantRebel]

Ha. Yeah, no other matching holes underneath passenger seat or anywhere on body. It’s neatly cut that I thought it was factory at first. Trying to figure out what possible accessories one could have that would cause one to place hole to run something to the exterior or from the exterior into the cab.

 

[charliemeyer007]

My 72 has factory dished drain holes that size more towards the front, like right below the dash and 1.5" from the doors.

 

[Living in the Past]

Unless I wrong this hole is below the driver's seat? The seats mount above the fuel take. There wouldn't be a drain in that location when right in front of it is the footwell which is quite a bit lower.

 

[3_puppies]

I was thinking that is where the wire for the park brake switch comes thru and goes to the handle????
or
a PO put a hole in a very odd place in the tub

 

[wimberosa]

If you are looking at this hole (which it appears you are if I'm not mistaken), it is a factory OEM hole for the catalytic converter sensor. Not strictly an O2 sensor since this predates that type sensor. Its more of a heat sensor for early cats. Lots of people don't have the sensor that runs through here if you've been de-smogged. The connection to the smog computer is through this part of the wiring harness (a pig tail near the hand brake portion of the harness)

 

[wimberosa]

Search for "Exhaust Gas Temperature Sensor 1979-1980" if you want to see what one of the sensors looks like.

 

[RevISK]

@wimberosa Durn fine detective work good Sir!

 

[iwashmycar]

I guess I was wrong

Solid info wimberosa

 

[ElephantRebel]

Thank you everyone for the valuable information! @wimberosa Great find! Thank you!