Planning the next
AO Silver Member
Join Date: May 2007
Location: United Kingdom
Sorry, didn't see your earlier reply. benn busy.
Unfortunately, I can't find the sensor ratings in the manual for an '01 24v.
If you have a multimeter, I'd measure the temperature of both sensors to see if they agree. Measure between terminals B1 & B2 ( that's the half of the sensor used by the ECU ) which should be a Grey/Blue wire and a Black wire. Then measure the other terminal ( A1 ) with the Grey/Red wire to earth.
If they agree with the engine both cool and hot, then I would look at the temperature gauge itself rather than the sensor.
If you still have the sensor you changed, have a look at it to see if the specification is written on it e.g. 'n Ohms at 25°C'