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gas gauge error 1971 145S 140-160

posted by  someone claiming to be cdu on  Fri Apr 11 08:27 CST 2003 [RELATED]


If it were both acting funky, the voltage regulator would be
suspect, but if it is only one it is likely the sending unit,
the gauge, the wires, the nuts that hold the gauge in place,
or rocks in your gas tank.

I put a GT gauge cluster in my 164 and one of the 3 connectors
is a little loose and when it gets super hot out it can work
itself pretty loose and the temp gauge doesn't register anything
sane. If I just push it back into place the gauge works fine
for another 6 to 8 months.

I'd fill the tank and look at the resistance of the sending
unit then run the car for a while and look at the resistance again.
I'd also try grounding the wire on the sending unit to see if
the gauge swings to full (don't leave it like this or you may
screw up the gauge).

The volvo shop manual is likely the best place to look for a real
procedure for fixing this.
chris






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