Now and then people are making fun of us because they think that we are farkling our Vs too much. Many of you have probably heard : “-This is of no use, you don’t need this and you don’t need that…” To those giving such “advices” I would like to tell the following little story.
I have a whole lot of extras on my V, including a digital temperature gauge (the brand is TTO) which has its sensor mounted on the hose close to the thermostat housing.
During the last year, maybe the two last years, I have noticed that the coolant temperature could go up to about 115 degrees C before the cooling fan kicked in, but I never got a warning light for high temperature so I thought it's only the temperature gauge that was somewhat off.
Anyhow, when I did winter maintenance, which this time included valve clearance check and replacement of coolant, I got the idea that I should remove the thermostat and check it.
It did not open, no matter how long I boiled it!
I could not even force it open when the water was 100 degrees C.
The coolant had only circulated through the tiny hole in the thermostat, maybe the engine vibrations had got it open sometimes, I do not know.
Now with new thermostat, the cooling fan starts at about 105 degrees as before. This is thanks to my digital temperature gauge, without it I would probably not have noticed that something was wrong until one extremely hot summer day when it could have been too late…
The thermostat is easy to check - do it sometimes!