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Old 20th February 2020, 19:37   #1
Steve42
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Default petrol tank/pump

hi all,
im having some fun with the petrol gauge .
it seems to be very random .
on the obd on test 06 I get a reading of a amount of petrol .
on test 06-1 all I get _ _ _ _ _ _
on the next test I get 01 06 02 and a amount of petrol which is the same as test 06 .
on the snapon reader its saying sensor fault on no1.

now have done a test on the plug on the tank. and all seems ok.
have taken both sides out. and petrol on the filler side was full. but the other side was very low .
now I would have thought it would be more balanced.
today I started with a gauge reading just under half a tank.
now reading 3/4 of a tank.

any clues or pointers .
thanks
steve
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Old 21st February 2020, 22:01   #2
T-Cut
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It's been ages since I even thought about diagnostics, so all I can offer at the moment is to suggest a read through this thread and see if there's anything helpful to your quest.
Click: https://www.the75andztclub.co.uk/for...d.php?t=297113

EDIT: The imbalance of the tank levels is interesting. It's what you'd expect straight after a visit to the filling station. I assume that's not the case and the car has been driven sufficiently since that last top up to have equalised the levels?

If that's so, it may suggest the LHS tank venturi pump isn't working right.

TC

Last edited by T-Cut; 21st February 2020 at 22:10..
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Old 22nd February 2020, 02:31   #3
Steve42
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Thanks for that t-cut.it was interesting.
Can take a pump off my old 75 by and change over to the zt.
But it looked like a nightmare of a job due to the in tank pipe work

Thanks
Steve.
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