> > now a question if I may... when I ground the sender wire, the coolant gauge > needle went to the max with a blinking light... - does it mean that the > coolant gauge is working good? or does a bad gauge could doing that too? > A gauge that's out of calibration but otherwise working will respond to this, but it's running twice the current (about 200 mA) through the gauge that it's expecting. If you want a calibrated result unplug the sender and substitute a 35Ω 5% (or better) resistor. That should blink the light and if you wait a minute and tap the cluster a few times should be at the top marking +/- half a needle width. Yrs, d |
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