Fuel Sender Resistances

[Daz_C 8 1 Cars]

I'm just in the process of fitting an aftermarket fuel gauge and to calibrate it to my original sender I need to know what the resistance in ohms is ?

 

If anybody knows that would be great.

[pug_ham 245 3 Cars]

Daz,

 

I've found the part number for the sender (0 986 580 238 ) on the bosch ecat but can't (or haven't yet) fopund anymore info.

 

Graham.

[Daz_C 8 1 Cars]

O.k thanks anyway, I've sorted it now by performing a manual calibration, seems to be o.k, I'll carry a jerry can till I can be 100%.

[EdCherry 34 1 Cars]

Can you post up your results for us that also would like to do a similar thing?

[Daz_C 8 1 Cars]

Can you post up your results for us that also would like to do a similar thing?

 

The only results I can give is that non of the resistance ranges listed below seemed to work with the sender.

 

 

73 - 10 ohms

16 - 158 ohms

0 - 30 ohms

0 - 90 ohms

240 - 33 ohms

107.5 - 7 ohms

131 -12 ohms

 

Custom Calibration

 

 

Some of them seemed to work initially but then started to creep up or down the others read wrong compared to the amount of fuel I had in the tank.

 

Custom calibration seemed my only option which envolved (for me) removing the sender from tank, putting a drop of fuel in an empty Nescafe jar, other jars are available

 

I did as the instructions stated and hey presto. I filled the jar to approx inch and a half over the base of the sender to be sure I had a reserve amount in the tank when it says empty.

 

My gauge is a Stack (programmable) Fuel level Gauge.

 

I'll carry jerry can for a while jsut to be sure.

[EdCherry 34 1 Cars]

Fair enough, I was tempted to run fuel level on my Race Technology Dash2 and wondered if you could make it easier thats all! Will do the same with mine and just input it all into the maths channel cheers mate!

[brumster 135 1 Cars]

I've just measured a sender as pulled from a 1.6 GTi (G-reg fwiw) and I get :-

 

Float at top - ~13 ohms

Float at bottom - ~270 ohms

 

Roughly in middle - 100 ohms

 

That's measured directly on the pins of the sender, and out of the tank.