| [GMCnet] GMC Fuel Tank Sensor resistance [message #99910] |
Wed, 15 September 2010 12:48  |
kelvin
Messages: 608
Registered: February 2004
Location: Eugene, OR
Karma:
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Senior Member |
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Need to know what the resistance does related to fuel level. This is
what I've found at one online site.
Accurate? Wrong?
Thanks in advance,
Kelvin
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/With General Motors analog resistance fuel gauges, the basic operating
principle is the same but electrically opposite. Resistance in the
sending unit decreases as the fuel level drops, and increases and the
level goes up. When the tank is empty, the sending unit reads about zero
ohms, and when the tank is full it reads about 90 ohms. Gauge operation
is also the same with maximum needle deflection corresponding to minimum
resistance in the sending unit. In this case, maximum deflection is
required to move the needle all the way over to the empty mark./
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