I recently purchased a 2007 Spider 2.2 JTS and, like some others here, the oil temperature indicator is stuck at zero. It never moves but the good news is that there are no other warning lights associated with this problem. I suspect I need to remove and replace the oil temperature sensor.
Searching the internet reveals various stories ............. some of them pretty ugly. The workshop manual I downloaded for the 2.2 version of the Alfa 159 indicates that the temperature sensor is bolted inside the sump; therefore, it's necessary to remove the sump to change the sensor. Of course, being an Alfa, getting the sump off requires a bit of additional R&R, but it's well within my capabilities. On the other hand, I'm old enough to know that assuming the 159 and Spider are identical can be risky.
What bothers me is reading some Italian reports (I'm an American living in Italy) which say the part alone costs around 230 Euros or so plus about 10 hours labor.
In contrast, someone posted here that he changed the oil temperature sensor with nothing more than a deep socket and the part cost only 12 British Pounds. Of course, that sounds much like what you would expect on a Chevy V-8; simple, cheap, and easy. Can this story be true?
One thread hinted that carefully cleaning the electrical connector might do the trick. That has a lot of appeal, assuming it works.
Some horrified Alfa V-6 owners report that step one in replacing the sensor is to remove the engine. Ouch!
So, what I would like to know, before I dive into this problem, is what to expect? I suppose I'd rather look at a indicator reading zero rather than remove the engine. Removing the sump is something I'd be willing to do (I like to drive a car with all components working) but if I have to pay over 200 euros for a simple sensor, I might just decide to ignore the problem. Of course, if it's a simple matter of reaching in the toolbox for the correct socket and if the part costs about as much as a couple of beers, I'm ready to attack that job next time I change the oil.
Can anyone shed some light on what it really takes to change the oil temperature sensor in my 2007 2.2 JTS Spider?