Message text written by Geo Hahn
>My fuel gauge and temp gauge both seem to read low. Could this be a
failing or maladjusted voltage stabilizer? Or do they fail completely
when they go? I tried getting a reading off the gadget but it isn't a
steady voltage. How does one check it?
<
In theroy you could get a storage osciliscope and capture a 5 or 10 second
trace and measure the duty cycle and peak voltage and calculate the average
voltage which should be 10 volts.
Or you could borrow a known good one and substitute.
The stabilizer is a bimetal spring device that pulses out a PWM signal with
an average output voltage of 10 volts but the frequency is in the range of
1 Hz. Not fast enough for the hot wire gauges to respond but certainly too
fast (or slow) for any meaningfull voltmeter measurement.
Good luck
Dave
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