New quiet lifters,
AO Silver Member
Join Date: Feb 2012
Location: United Kingdom
County: Greater London
My fuel gauge is an idiot
Is this normal? (147 1.9 16v JTDM)
Set off on 150ml round trip, with ~2/3 tank showing
Get back from 150ml round trip, with ~1/3 tank showing
It was indicating 205ml range shortly before I parked.
Next time I start the car, it's showing FA fuel and indicating restricted range. Idiot.
This isn't the first time and it is telling lies. Once the gauge gets below 1/3 it loses its marbles once parked. There is a bit of a camber, but not 1/3-tank worth. I know that if I fill it up it will prove to be 1/3 full.
I don't particularly care, but last time it claimed to be running on fumes, I did 50mls then turned off and filled up because I was worried it would run out, only to find there were still 11L in the tank.
OK, that's better than pretending there is fuel when there isn't, but 11L is beyond sensible caution.
I don't understand how the gauge goes from 1/3 (correct) to buggerall, just through being parked. It seems the tank sensor is working, but I suspect there's some insanity being applied by the ECU. Anyone know more?