Or what is it not doing would be more to the point.
On my Toyota 4Y there is a sender or switch on the top of the head at the front.It has a single blade terminal.There is no wire attached to it.The temp gauge works, so it's not for that.The fan is mechanical so it's not a fan switch.It's carburetted so it's not a temp sensor for EFI.
phillip.weston,
Jun 24, 12:25pm
perhaps oil pressure switch. Are you able to take a photo of it!
doug207,
Jun 24, 1:25pm
Pull it out and see, my guess is a temp sender for an auto choke unit.
jsbike,
Jun 24, 1:27pm
it prob had a wire going to it many moons ago
ceebee2,
Jun 24, 1:39pm
Its the thermatic fan switch.
ceebee2,
Jun 24, 1:40pm
Probably an import manifold that had the electric fan
bjdw,
Jun 24, 1:51pm
It's got a manual choke, but maybe that is aftermarket.
40wav,
Jun 24, 4:59pm
File it off, that'll learn it!
bae13,
Jul 22, 3:56am
some of the imports had a flap thatdirected air when the engine was cold to be sucked from around the exhaust, as the engine warmedthe switch in coolant operated a vacuum valve which then moved the flap which then switched to normal air, some of the air cleaners had a metallic pipe that hung down to a steel pipe on the manifold
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