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#546866 - 07/12/18 02:20 PM Fuel gauge weirdness
P Dron Offline

Has a lot to Say!

Registered: 03/06/13
Posts: 1257
The fuel gauge of my 2015 4/4 is eccentric...

With full tank, the needle goes above max and stays there for a considerable distance. Then it drops, rather rapidly, to ½. It stays there for a considerable distance and then drops rapidly to ¼.

That's all fine, but then it gets weird. The needle drops suddenly to well to the left of zero, though I now know from experience that the tank is not empty (or even worse than empty, as suggested!).

A few miles later, the needle swings back to the right, to nearly half full.

The gauge of my M3W was hopelessly pessimistic after half the fuel had been used. But this is ridiculous...

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#546868 - 07/12/18 02:30 PM Re: Fuel gauge weirdness [Re: P Dron]
Graham, G4FUJ Offline
Salty Sea Dog
Member of the Inner Circle

Registered: 03/07/07
Posts: 21253
Loc: Cheltenham, Glos. UK
Stuffed sender unit?
_________________________
Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'07 MINI Cooper

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#546874 - 07/12/18 02:48 PM Re: Fuel gauge weirdness [Re: P Dron]
P Dron Offline

Has a lot to Say!

Registered: 03/06/13
Posts: 1257
That sounds plausible. You'd think it would just conk out, though, rather than jumping down and up again.

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#546881 - 07/12/18 03:15 PM Re: Fuel gauge weirdness [Re: P Dron]
SFG Offline

Talk Morgan Regular

Registered: 23/03/17
Posts: 676
Loc: South Oxfordshire
You can sort that out with a bit of insulating tape
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SFG
2012 4/4 Sport

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#546882 - 07/12/18 03:17 PM Re: Fuel gauge weirdness [Re: P Dron]
madmax Offline
Part of the Furniture

Registered: 18/08/14
Posts: 4226
Loc: East Anglia
Or fill up every 100 miles to make sure !
_________________________
Geneva 2016 plus 8' The Green Godess' 4 side exits .



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#546888 - 07/12/18 03:31 PM Re: Fuel gauge weirdness [Re: SFG]
P Dron Offline

Has a lot to Say!

Registered: 03/06/13
Posts: 1257
Originally Posted By SFG
You can sort that out with a bit of insulating tape


I used to own an Alfa 75 Twin Spark. It was a great car and I wish I still had it, but some aspects of the interior design were demented. For example, there was a red warning light about 2in square that flashed when the handbrake was applied. That got covered in tank tape.

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#546889 - 07/12/18 03:34 PM Re: Fuel gauge weirdness [Re: madmax]
P Dron Offline

Has a lot to Say!

Registered: 03/06/13
Posts: 1257
Originally Posted By madmax
Or fill up every 100 miles to make sure !


200 is a safe limit.

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#546909 - 07/12/18 05:03 PM Re: Fuel gauge weirdness [Re: P Dron]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 12469
Loc: Suffolk
Sounds like the gauge on all 3 Morgans I have had but not the wired but below 1/4 tank.
I use 200 miles as a refill point.
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JohnV6
2006 Indigo Blue Roadster S1

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#546951 - 07/12/18 07:35 PM Re: Fuel gauge weirdness [Re: P Dron]
Craig Jezz Offline

Talk Morgan Regular

Registered: 27/03/17
Posts: 666
Loc: Oxon
On my 4/4 Sigma, I fill up every 400 miles
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Morgan 4/4 Sports Sand (Williams & Wolf Tuned)
BWM 320d M Sport Xdrive

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#546958 - 07/12/18 08:33 PM Re: Fuel gauge weirdness [Re: Craig Jezz]
IvorMog Offline

Talk Morgan Regular

Registered: 17/04/17
Posts: 618
Loc: Staffordshire
Half the horsepower, double the mileage somestick


Edited by IvorMog (07/12/18 08:34 PM)
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1999 4/4 1.8 Zetec Silvertop

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