wobbley fuel gauge reading

For all those wiring gremlins we love, this is the place to discuss them.

Moderator: Board Moderators

tricky
Junior Poster
Posts: 54
Joined: Sun Nov 25, 2007 20:28

wobbley fuel gauge reading

Post by tricky »

hi can anyone help my fuel gauge needle is bouncing up and down and is difficult to tell where it is supposed to be. :?

User avatar
amarshall
Moderator
Posts: 8282
Joined: Tue Nov 01, 2005 18:09
Model: SE
Colour: Monaco White
Year: 1990
Location: Darlington
Contact:

Re: wobbley fuel gauge reading

Post by amarshall »

TADTS (They All Do That Sir).


Best advice is to start looking for a fuel pump every 200 miles or so - or when the needle seems to be spending more time around 1/4 thatn anywhere else.
https://www.lotusexcel.co.uk/
SORN - just say NO!

User avatar
peter319
Junior Poster
Posts: 40
Joined: Wed Oct 08, 2008 09:22

Re: wobbley fuel gauge reading

Post by peter319 »

He He,
Mine is the same.....empty with warning light on around every left hander and full to the brim opn every right hander! Also 1/4, 3/4, 1/4, 1/2, 3/4 etc at a standstill, I just use near the middle of the fluctuations as a guesstimate.

User avatar
robertverhey
Senior Poster
Posts: 762
Joined: Tue Nov 01, 2005 10:54
Year: 0
Location: Sydney
Contact:

Re: wobbley fuel gauge reading

Post by robertverhey »

Fuel gauge? Waste of space. I use the trip meter to tell me when I need to look for a petrol station
Robert Glacier Blue '87 SE

KevW
Senior Poster
Posts: 1571
Joined: Sat Jun 16, 2007 23:20
Model: Excel SE
Year: 1992
Location: Newcastle Upon Tyne, England

Re: wobbley fuel gauge reading

Post by KevW »

It amazes me that if the fuel gauge works perfectly on my brothers old Mini why couldn't Lotus get the gauge to work on their expensive "Junior Supercar".

Trying a new sender is on the bottom of my things to do list.
Kev W no.282

User avatar
Steve C
Senior Poster
Posts: 801
Joined: Tue Nov 01, 2005 11:31
Year: 0
Location: Hampshire

Re: wobbley fuel gauge reading

Post by Steve C »

Mine used to be pretty good but has recently gone wild. The cause (as far as I'm aware) is that there is meant to be a damper on the tank sensor, but this seems to fail / wear completely resulting in wild behaviour!

ian.mac
Junior Poster
Posts: 44
Joined: Tue Nov 08, 2005 01:18
Model: Excel SE
Colour: BRG
Year: 1986
Location: Gloucester

Re: wobbley fuel gauge reading

Post by ian.mac »

It's when the needle stops bouncing around with the warning light on.....that's when I start to panic!

User avatar
robertverhey
Senior Poster
Posts: 762
Joined: Tue Nov 01, 2005 10:54
Year: 0
Location: Sydney
Contact:

Re: wobbley fuel gauge reading

Post by robertverhey »

I'm a bit braver, I wait until the red light's on and a right hander no longer makes the needle go up....that means it's getting very very low!

But then I do carry a 5 litre fuel can in the boot.....
Robert Glacier Blue '87 SE

User avatar
hodders
Senior Poster
Posts: 422
Joined: Mon Aug 28, 2006 22:13
Model: Excel Celebration
Colour: Calypso Red
Year: 1992
Location: Lambourn, West Berkshire
Contact:

Re: wobbley fuel gauge reading

Post by hodders »

My car boot smells like I'm carrying a 5 litre fuel can ...unfortunately I'm not. Waiting for a new fuel filler cap kit.
-- hodders

1992 Lotus Excel Celebration, Calypso Red
2016 BMW i3, Protonic Blue
2017 Audi S4 Avant, Navarra Blue

User avatar
hodders
Senior Poster
Posts: 422
Joined: Mon Aug 28, 2006 22:13
Model: Excel Celebration
Colour: Calypso Red
Year: 1992
Location: Lambourn, West Berkshire
Contact:

Re: wobbley fuel gauge reading

Post by hodders »

I'll give you three guesses... no I won't, I will give you one guess.

Mike at LB was going to order three - but they haven't come in yet. One kit was for one of the lads who works there, so no doubt he will remind Mike. "About £30": kit includes everything bar the coloured fibreglass cover.
-- hodders

1992 Lotus Excel Celebration, Calypso Red
2016 BMW i3, Protonic Blue
2017 Audi S4 Avant, Navarra Blue

User avatar
hodders
Senior Poster
Posts: 422
Joined: Mon Aug 28, 2006 22:13
Model: Excel Celebration
Colour: Calypso Red
Year: 1992
Location: Lambourn, West Berkshire
Contact:

Re: wobbley fuel gauge reading

Post by hodders »

And now my fuel gauge sender has gone westwards, with the warning light on all the time (unless I corner really quickly - in which case the needle flickers :D ) Seems to be associated with the recent cold weather - is that a theory?
-- hodders

1992 Lotus Excel Celebration, Calypso Red
2016 BMW i3, Protonic Blue
2017 Audi S4 Avant, Navarra Blue

User avatar
hodders
Senior Poster
Posts: 422
Joined: Mon Aug 28, 2006 22:13
Model: Excel Celebration
Colour: Calypso Red
Year: 1992
Location: Lambourn, West Berkshire
Contact:

Re: wobbley fuel gauge reading

Post by hodders »

Searched through the forums but no-one has had much success with replacing the fuel sender - I presume it's a fuel tank out job? :( (or at least partially out). I shorted the green wires going to the sender and the gauge deflects to full so I'm assuming the sender is faulty / dirty.
-- hodders

1992 Lotus Excel Celebration, Calypso Red
2016 BMW i3, Protonic Blue
2017 Audi S4 Avant, Navarra Blue

malcolm
Regular Poster
Posts: 185
Joined: Sun Mar 19, 2006 11:48
Model: se
Colour: essex blue
Year: 1986
Location: maidstone kent

Re: wobbley fuel gauge reading

Post by malcolm »

hodders wrote:Searched through the forums but no-one has had much success with replacing the fuel sender - I presume it's a fuel tank out job? :( (or at least partially out). I shorted the green wires going to the sender and the gauge deflects to full so I'm assuming the sender is faulty / dirty.
Does any one know if replacing the sender will sort the fluttering needle out. I cant imagine even Lotus sent them out of the factory like that. The sender is fitted in the top of the tank so replacing would be a tank out job.
1986 Excel SE Essex Blue.

User avatar
hodders
Senior Poster
Posts: 422
Joined: Mon Aug 28, 2006 22:13
Model: Excel Celebration
Colour: Calypso Red
Year: 1992
Location: Lambourn, West Berkshire
Contact:

Re: wobbley fuel gauge reading

Post by hodders »

I got as far as sourcing a secondhand sender, dismantling it, cleaning it up, checking that it works - and then the one in my car started working again. Intermittently. So I might get round to taking the tank out or I might not.
If you want to have a go, I took a lot of photos of the sender as I cleaned it - and a video showing the resistance readings. :oops:
-- hodders

1992 Lotus Excel Celebration, Calypso Red
2016 BMW i3, Protonic Blue
2017 Audi S4 Avant, Navarra Blue

User avatar
Tanz
Senior Poster
Posts: 1558
Joined: Thu May 03, 2007 22:05
Model: SE
Colour: Calypso Red
Year: 1988
Location: Wolverhampton

Re: wobbley fuel gauge reading

Post by Tanz »

I must be lucky - my gauge works fine - opps famous last words............
Cheers, Phil
Never take life seriously, nobody gets out alive anyway!

Post Reply