I have been taking a very keen interest in the water temperature gauge on my +2 since a bout of overheating persuaded me to fit a new radiator. However, this has led me to notice a very strange state of affiars. With the new rad., my water temperature hovers just below the 85 mark for the early stages of any journey. After a while, however, it increases (within a few seconds - though I have never seen it make the move) and cycles between the bottom of the red sector and the mark above 85 . Co-incidental with this sudden increase in indicated water temp., the fuel gauge also suddenly reads much higher. For example it will go from half full to three quarters.
If I switch off for a few seconds and then restart sometimes the readings drop back to their earlier lower readings and sometimes they don’t. None of the other gauges change in this way.
Do I have a problem with my voltage stabiliser, or what else may be causing this odd effect. And which water reading do I trust?
Fortunately it never goes into the red even when it is reading at the higher level and there is no sign of boiling any more with the new radiator and overhauled fan.
I estimate from fill-up that the fuel tank had about 30 litres in when it read half full and then advanced to three quarters, if that is any help.
Confused of Surrey
Roy
Matthew
fixing it seems to have cured the problem. I can only assume that somehow the temp system must have been maintaining a circuit via the instrument earthing system etc???