now then folks
trying to fathum out an issue
have a 2001 2.5 v6 tdi sport quattro 180, engine no ake
temp guage sits at around 65 -70 degrees in normal driving conditions and i know it should be 90 degrees.
i changed the temp sensor and it made no difference so i had a code read and it refered to temp guage short to earth which would mean a fault on the guage itself.
BUT when i am towing or accelerating hard you know giving it a bit of pasty the needle will rise and sit at 90 like it should. the engine obviously will generate more heat due to the extra effort its doing.
if the thermostat is opening to early or is stuck open slightly will the temp guage show this like it is. does a thermostat open and close all the time your engine is working, i.e. it opens at 90 and diverts water to the rad but when the rad has cooled the water does it close again untill the water is at 90 again.
there is another sender on the bottom rad hose, i think this controls the fans though is it worth changing this also,
last bit of info there is a fan constantly running i think it is supposed to be, and behind that is another fan that comes on and off should this fan be always on as i think that is the reason that when idling or driving normally the temp drops as this is cooling the rad.
if the thermostat is stuck open and water is always ciculating through the rad then this fan is cooling the water when is shouldnt be do you see.
if anyone has had this issue before and can help out or is a wizzo tech i will be a really happy person ( until the bill arives for the replacement of the thermostat,cam belt,waterpump arrives) lol