Pagoda SL Group

W113 Pagoda SL Group => Electrical and Instruments => Topic started by: mfriedman on May 01, 2011, 16:33:19

Title: Fuel Gauge Stuck at 1/4 Tank
Post by: mfriedman on May 01, 2011, 16:33:19

On my 1965 230SL, the fuel guage operates from off (empty) to 1/4 tank even though there is a full tank of fuel and has a brand new fuel sending unit. Any comments would be appreciated.

Title: Re: Fuel Guage Stuck at 1/4 Tank
Post by: ja17 on May 02, 2011, 06:18:10

There are early and late style sending units which will not interchange unless the fuel gauge is changed also.  Did you install a cylindrical unit or a "lever and float" type?

Title: Re: Fuel Guage Stuck at 1/4 Tank
Post by: mfriedman on May 02, 2011, 18:31:15

I installed the round aluminum newer type.

Title: Re: Fuel Guage Stuck at 1/4 Tank
Post by: al_lieffring on May 05, 2011, 15:10:47

There is a shipping pin that holds the float in place that needs to be removed before installation of the new sensor.

Title: Re: Fuel Guage Stuck at 1/4 Tank
Post by: pablo_o2 on May 13, 2011, 17:24:50

did you try to change the wiring I noticed when I was experimenting with the wires somehow when they were switched from place the gauge only went to 1/4. Also I read in the technical pages that gauge and sender unit are not interchangeable with newer types. If you changed to the newer tube unit maybe that can cause a conflict also.