Mar 30, 2012 update to the Mercedes-Benz 230 S project car

Can We Get a Reading?

We didn't want to run out of gas on our way to a rallycross.
Jere checks our original sending unit with a multimeter, only to discover that the unit is rubbish.

At least we’ll have one easy visual clue when it’s time to start hunting for the nearest gas station.

We are not fussy people, but before driving a 46-year-old 1966 Mercedes-Benz 230 S 150 miles to and from an event, we decided we either needed to have an accurate odometer or a functional fuel gauge. We put the multimeter on the gas tank sending unit and got nothing. A quick inspection showed that the sending unit had been apart once already, so we decided to scrap it. Unfortunately, a new one was nearly $150. We decided to try the one from the parts car in the junkyard up the street. We bought it for $5, put it in, hooked it up, sealed it thoroughly and, even though it was older style, it seemed to work fine.

The odometer is still a question mark, but at least we’ll have one easy visual clue when it’s time to start hunting for the nearest gas station.

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