Mk1 Focus Fuel level sender

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3414peterk
Posts: 3
Joined: Fri Sep 11, 2015 3:55 pm

Mk1 Focus Fuel level sender

Postby 3414peterk » Fri Sep 11, 2015 8:46 pm

Evenin all,
I'm fitting a Dash 2 into my Focus rally car and am hoping to use the std fuel level sender.
I don't suppose anyone else has done it and could pass on the settings, saving me a few hours?
Cheers all.
Pete

osborni
Posts: 502
Joined: Fri Dec 07, 2007 9:08 pm
Location: USA, Michigan

Postby osborni » Sun Sep 13, 2015 7:50 pm

You will need to know what the ohm range is for the sender. Wire up the pull up network with the appropriate resistor. Then feed in 1 liter (or 1/2 gallon - or so) at a time and take some data.

If you know the sender's resistance range, you can approximate the amount with a linear extrapolation, but most OE gas tanks are not linear in how they fill. So you would likely be best to do it yourself.
BMW 2000 M Coupe

3414peterk
Posts: 3
Joined: Fri Sep 11, 2015 3:55 pm

Postby 3414peterk » Mon Sep 14, 2015 12:49 pm

That's the proces I'm going through with the temp and oil sensors, I was just hoping somone else might have done the fuel and could save me a couple of hours.

peterguk
Posts: 41
Joined: Mon Oct 27, 2014 10:19 pm

Postby peterguk » Mon Sep 14, 2015 4:49 pm

3414peterk wrote:That's the proces I'm going through with the temp and oil sensors, I was just hoping somone else might have done the fuel and could save me a couple of hours.


Have you checked the workshop manual? The full and empty resistances are normally published for diagnostic purposes.

3414peterk
Posts: 3
Joined: Fri Sep 11, 2015 3:55 pm

Postby 3414peterk » Tue Sep 15, 2015 5:44 pm

I've not checked yet, but i'd need some readings in the middle ideally to get a more useable indication.
I'll put it empty and take readings every 10 Ltr I guess.


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