Quote:
Originally Posted by Zacharias
3. When relay active I have 11.98 volts at all five male pins in relay.
4. HOWEVER, only have 9.75 volts at glowplugs when relay is activated. (I had previously used a test light on the GPs, today I used the multimeter.)
What am I seeing here?
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You are missing nothing. 9.75V, could be less, at the plug is normal The GP is telling you it is drawing a lot of current and the terminal voltage drops. Measuring the resistance of the GP is good enough. You may have a weak battery if the car does not crank as fast as it should. Otherwise there is nothing wrong with the GP.