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914World.com _ 914World Garage _ Flaky fuel reading - gauge or sender?

Posted by: smontanaro Nov 5 2011, 09:31 PM

My fuel gauge has never quite read completely full after filling the tank. Lately though, it seems to have gotten worse, typically reading only about half full after filling the tank. What is more likely to be the culprit, the gauge or the sender? Removing the sender doesn't look to difficult. Can they be repaired?

Thx,

Skip

Posted by: Spoke Nov 5 2011, 09:36 PM

Likely its the sender. They can be repaired by taking them apart and carefully cleaning the 2 sliders and wires.

Posted by: smontanaro Nov 6 2011, 06:23 AM

Cool, thanks.

Posted by: 76-914 Nov 6 2011, 09:09 AM

From our classic's thread section: http://www.914world.com/bbs2/index.php?showtopic=46292

Posted by: smontanaro Nov 20 2011, 02:08 PM

So today I got around to this task. I pulled the sender, then disassembled and cleaned it per the couple threads on the topic. Resistance between
two of the pins was within http://www.914world.com/bbs2/index.php?showtopic=46292:

QUOTE

Two other pins will give you a variable resistance from 5-10ohms with the float at the top, and 70-90 ohms with the float at the bottom.

The wires didn't seem to be in bad shape. I carefully cleaned them with a bit of fine steel wool. The little contacts on the float seemed to be covered in some crud though. I cleaned the contact surfaces with a toothpick wrapped in a bit of tissue.

The only thing I wished I had done before getting started was to check the fuel gauge reading. Afterwards it read well over half full. I had only been getting to at most half full before.

Thanks for the help.

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