Hey gang, this one is whipping my butt......help. Probably something simple and I'm being a knothead.
Subject is an EIS 4000 and Sport SX EFIS with standard Stewart Warner fuel tank senders.
Initial (and current) EIS configuration settings are AuxSF "100" and AuxOff "0", per the instruction sheet for float senders.
Initial fill saw the fuel level indication get lower with increasing fuel quantity, from 6 gallons empty to 2 gallons when full. Obviously not right. However, an ohmmeter check at the senders read 30 ohms for a full tank and 248 ohms for an empty tank, which I think is correct. So, I changed the Auxiliary Forward/Reverse Sensing Selection to reverse (negative), increasing voltage = decreased value. That immediately gave me a 20 gallon reading for the full tank, which is about right. However, the empty tank indication is still way off.......and I don't seem to be able to find the correct settings.
Yeah, I can ring up GRT on Monday, but hey, this is VAF
Subject is an EIS 4000 and Sport SX EFIS with standard Stewart Warner fuel tank senders.
Initial (and current) EIS configuration settings are AuxSF "100" and AuxOff "0", per the instruction sheet for float senders.
Initial fill saw the fuel level indication get lower with increasing fuel quantity, from 6 gallons empty to 2 gallons when full. Obviously not right. However, an ohmmeter check at the senders read 30 ohms for a full tank and 248 ohms for an empty tank, which I think is correct. So, I changed the Auxiliary Forward/Reverse Sensing Selection to reverse (negative), increasing voltage = decreased value. That immediately gave me a 20 gallon reading for the full tank, which is about right. However, the empty tank indication is still way off.......and I don't seem to be able to find the correct settings.
Yeah, I can ring up GRT on Monday, but hey, this is VAF
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