Quote:
Originally Posted by Christ
Ben -
The "GM standard" for most of their fuel sending units is a simple signal between 0-90 ohms resistance in a pot-controlled circuit. As the fuel sending unit's level sensing arm goes up, impedance increases (maybe... could be the other way) and the needly thingy rises in the gauge.
Maybe if you put a controlled 40 ohm signal to it (at 12VDC) it will read ~1/2 tank? Couldn't hurt to try?
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On the Saturn - resistance in to PCM - varying square wave out to meters BUT I think resistance should work - on temp gauge use a thermistor and embed it inside a bolt to pickup engine heat - use a pot across to scale it -- the Saturn shows HOT at 50 ohms.. Hey Ben are you going to drag everything to the MREA this year?