Allroad 2.5tdi Low Fuel Level Sensor (G210)

[bagpipingandy]

Info sent, check you e-mails,

Guage works although I still get nervous now at 40 miles left , i check the resistance now and again, and it is still 30ohms at bottom stop,

The rear sender is easiest to check and was the problem with mine, it tends to spend most its life out of the fuel hence perhaps the corrosion. basically if you have (approx) 1/4 tank check the rear level sender resistance, accessable under boot floor check 2 sender connections, or under rear passanger seat and check the 2 connector connections (not sender). it should read 30 Ohms if sitting at the bottom stop and 91.5 Ohms top stop (removing the sender gives the benifit of testing it throught its range), the e-mail I sent has all values you may require to check all senders

regards

Andy

[wpmosc]

Does Anybody still have the Values Ohm Values for all three Sensors from Bottom and Top, Battling for a year with this already.......... ?

[rahail240]

I replaced all 3 senders with new Audi units.
Still hasn't done the job.

[wpmosc]

There is apparently still a Voltage Regulator in the Dash Cluster involved, you should get 4-5 Volt at each sender, if I remember correctly...............

[rahail240]

But if i had an inaccurate voltage reg for dash,wouldn't other gauges read inaccurately?
i just remember my capri mk1 with same fault lol, and a few gauges read wrong then.
(Just for reference, I'm not that old, its a classic car I've had for a few years!!)

[Peter D]

G210 low level 100 ohms full 430 ohms
G1 10 - 70 ohms
G169 20 - 118.5
G237 30 - 81.5 ohms

Regards Peter

[Peter D]

The 3 sensors are wired in series thus a max resistance of 270 ohms.
G210 is wired directly to the Diesel Direct Injection Control Unit and does shut the engine down to avoid wrecking the pump and filing the pipes with air. The device has a resistance of 100 ohms and if the is enough fuel then a 330 ohm resister is switched in thus 430 ohms. Regards Peter

[wpmosc]

I actually have have the Petrol (Otto) 2.7l, but according to ETKA the Diesel and Petrol are the same Sensors in the Tank, as per attached Picture. Peter can you please point out which Sensor is which ie. Right at Fuel Pump, Left and middle in the Back. Thanks....Attachment 20061

[Peter D]

Exactly what model car do you have and what engine code. Regards Peter

[wpmosc]

Peter, its a 2001.5 (Basically 2002) with an ARE Engine. My Gauge shows full, then 3/4 on the Gauge is about half Tank and just before 1/4 its empty. Jet pump seems to work as filling up is consistent with Readings I get. Have changed the right Fuel Sender at the Fuel pump already and now the middle Back one, both were from eBay, but the Result was the same. Will post the Readings a bit later of those two Senders......Thanks