The Triumph Dolomite Club - Discussion Forum

The 1500HL auto I bought last summer has both an inoperative temperature gauge and fuel gauge. Is it the voltage stabiliser at faulty, or coincidental and simultaneous failure of the respective sender units?

Logic says a common fault is more likely than a simultaneous failure!

Were they working when you first got it? if not then all bets are off as you have no idea what a previous owner may have fiddled with.

If they were working then just do the usual, start at the voltage stabiliser, check for volts in and volts out and go from there -if it is the original bi-metallic sort then of course the output readings can be a bit random on a modern digital voltmeter.

For an electromechanical device the old style voltage regulators are remarkably reliable. The problems start with long over winter layups which give chance for the contacts to stick/corrode etc. Constant use keeps the contacts "electrically clean". As with most bits on the regular use is better than laying up - but then we all now that anyway

Roger

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1975 Sprint Man O/D in Honeysuckle Yellow
1971 Stag Auto White

Too many cars, too little time!

I'll give evens on the VS and 10-1 on simultaneous sender failure. A side bet says that if you change the VS, the fuel guage may still end up inoperative. Nearly every long laid up Dolomite i've met recently has had a duff fuel sender.

Steve

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

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15 to 1 that there is a lose wire causing the inactivity

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Fuel gauge was a stuck sender; the float had split and filled with fuel so it no longer floated. Low fuel light still not operating though...

Temperature gauge assumed on that basis to be the sender also...