whats this sensor?

[gasman]

went to pick a part today and got an O2 sensor from a camary which i assume will work with a 20v blacktop as its a 4 wire one and stuff, but i also noticed that there was another sensor on the exhaust which i have no idea whats it for.



the o2 sensor is in blue and the other one is in red.



close up of the mystery sensor.

i took the mystery sensor out and it was about 5cm long, if that helps

also if i take the air box off the blacktop what do i do with the air intake temperature sensor? do i even need it to run properly?

[crnkin]

its the cat sensor i thinkin

[Dell'Orto]

Yup, cat temp sensor

[sergei]

as above, but this is actually a temp switch, it switches on when temperature is over certain point.

[rolla_fxgt]

as above, but this is actually a temp switch, it switches on when temperature is over certain point.

Excuse my ignorance but what does it actually switch on?

[cr1mnl]

a light on the dash to tell you your cat is overheating and blocked. meeow

[gasman]

a light on the dash to tell you your cat is overheating and blocked. meeow

does the light look something like this?

[cr1mnl]

haha yes. go paint!