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Fuel Guage #690977
27/02/21 11:31 AM
27/02/21 11:31 AM
Joined: Feb 2021
Posts: 3
C
Chiltern Offline OP
New to Talk Morgan
Chiltern  Offline OP
New to Talk Morgan
C

Joined: Feb 2021
Posts: 3
I am relatively new to Morgan ownership having bought a 2006 4/4 two years ago and until recently I have not experienced any problems however I have now developed a fuel gauge problem.

On switching on the ignition the needle swings to full and stays there irrespective of the amount of fuel in the tank. I have assumed that there is either an electrical fault or the sender float is stuck in the full position so thought it would be a simple job to remove the sender unit from the tank to check. However on inspection the tank top is so close to the transverse wooden frame I would need to remove the tank in order to remove the sensor something I don't want to attempt. The roads around me are pretty bad and I had hoped that if it was stuck the shaking would free the float if stuck but no such luck. I have done a search on this site and see that most people seem to have had problems with the gauge accuracy something I didn't experience mine worked fine, I know I can rely on keeping a check on my mileage but would like everything working.

My question is are there any electrical checks (simple explanation please) I can do that may give a indication if the fault is with the sender unit or in the guage?

Thanks

James

Re: Fuel Guage [Re: Chiltern] #690994
27/02/21 12:58 PM
27/02/21 12:58 PM
Joined: Jul 2007
Posts: 25,577
Cheltenham, Glos. UK
Graham, G4FUJ Offline
Salty Sea Dog
Graham, G4FUJ  Offline
Salty Sea Dog
Member of the Inner Circle

Joined: Jul 2007
Posts: 25,577
Cheltenham, Glos. UK
James, check the earth connections to the tank. Gauge usually goes to full as yours has when an earth connection fails.
Good luck with checking for it smile


Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'06 Saab 9-3 Convertible
Re: Fuel Guage [Re: Chiltern] #691018
27/02/21 03:43 PM
27/02/21 03:43 PM
Joined: Jul 2007
Posts: 19,655
Suffolk
John V6 Offline
Member of the Inner Circle
John V6  Offline
Member of the Inner Circle

Joined: Jul 2007
Posts: 19,655
Suffolk
The earth goes to ground at the right (driver0 hand rear side of the chassis.


JohnV6
2014 Brooklands Edition Roadster "Brookland's Belle" #5 of 50
Re: Fuel Guage [Re: Chiltern] #697387
05/04/21 11:15 AM
05/04/21 11:15 AM
Joined: Feb 2021
Posts: 3
C
Chiltern Offline OP
New to Talk Morgan
Chiltern  Offline OP
New to Talk Morgan
C

Joined: Feb 2021
Posts: 3
I have checked the tank and there is no evidence of any earthing wire having been fitted. I did try earthing with some jump leads to the chassis but no change!

James

Re: Fuel Guage [Re: Chiltern] #697396
05/04/21 11:32 AM
05/04/21 11:32 AM
Joined: Feb 2016
Posts: 3,688
East Harling, Norfolk UK
RichardV6 Offline
Talk Morgan Addict
RichardV6  Offline
Talk Morgan Addict

Joined: Feb 2016
Posts: 3,688
East Harling, Norfolk UK
2006 was a change year. The issue maybe with the 4 way plug or connection to both fuel pump and sender (blue wire) therefore. Maybe remove and check connections if possible. This connection includes its own wired ground so there won't be another. There is a comment on wiring schematic to connect cable screen to ground but likely this is for electrical noise suppression.


Richard

2018 Roadster - Red/Magnolia - "Morton"
1966 Land Rover series 2a SWB
1960 Velocette Venom

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