Do you have AC in your car? As a Phase 3 i'd expect it was bitron controlled, not temp switch.
The fan overruning you describe can also come from a corroded body to fan plug where the loom meets the fan cowling. It's a free check and it's worth seeing if there is green fuzzy crap in the plug. It has the potential to cause fires so do it sooner rather than later.
After heavy rains in 2011 I arrived at my parents after 180 miles of solid heavy rain. Next morning my fans were running by themselves. I took the loom plug off the fans and found all sorts of corrosion. Cleaned up and rebuilt and hey presto.
The fan overruning you describe can also come from a corroded body to fan plug where the loom meets the fan cowling. It's a free check and it's worth seeing if there is green fuzzy crap in the plug. It has the potential to cause fires so do it sooner rather than later.
After heavy rains in 2011 I arrived at my parents after 180 miles of solid heavy rain. Next morning my fans were running by themselves. I took the loom plug off the fans and found all sorts of corrosion. Cleaned up and rebuilt and hey presto.
Night Blue VW Golf 7 GTD : Bianca 306 Rallye : Mini Cooper D (The Mrs')
![[Image: wallye-gtd.JPG?raw=1]](https://www.dropbox.com/s/pcxk1pgpaucznvr/wallye-gtd.JPG?raw=1)
HDi Owner for 200k/9 years
HDi Owner for 200k/9 years
