<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by purple:
<strong>a) easy, however I also removed the battery as this makes access to lower bolts easier. Also have to drain coolant from system. Trickiest bit is removing the Alfa pipe clips which are a pain and have to be replaced with jubilee clips.
b) even easier, acually located in thermostat body, simply unscrews once the connector is removed.
c) I did both at same time, that said the sensor is the easiest and cheapest so perhaps do that first. Also no need to drain coolant if quick, just get an assistant to put finger over hole.
With either job you must do it when the coolant is cold, sounds obvious, but is is suprising how much heat the engine retains. Go, ask how I found out
</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Go on, I wanna know how you found out?
Also sorry to sound like a dunce, but what is the best way to drain the cooling system? I did this once about 10 years ago on my *cough* Austin Allegro laughing when changing the water pump, by just ripping off a pipe connected to the radiator. Thing is, that car was much like a mechano set - I suspect this will be a bit different!