it's on the radiator, just pull the wires and unscrew it.
Which sensor ???
I have a 240 and with the knock sensor unplugged it will still start so I would have to say no.
Connected to the intake air duct.
met poep
on top of bellhousing, behind head, pass-side
O2 sensor/leaky injecters/fuel pressure regulator.
it is located on top of the bell housing behind the engine
under the dash in the center console, it's big and red.
long answer: yes
Yes the 240 does have fuses. Was that your ?.
how do adjust timing belt on a volvo 240 DL ?
Its behind the instrument cluster. Look at a new one online to correctly identify.