Mud-club

Vehicle & Technical => Defender => Topic started by: Leigh on July 06, 2006, 09:28:12

Title: Funny fuel gauge
Post by: Leigh on July 06, 2006, 09:28:12

Here's a bizar one. Whenever I put my foot on the brake pedal the needle on my fuel gauge goes up, even if I'm parked up.

Could this be a bad earth or is it common on Defenders?

Cheers

Title: Funny fuel gauge
Post by: Bush Tucker Man on July 06, 2006, 10:14:55

Do the contents increase in volume as well? :lol:

Title: Funny fuel gauge
Post by: Leigh on July 06, 2006, 10:17:13

Quote from: "Bush Tucker Man"

Do the contents increase in volume as well? :lol:

I wish  :lol:

Title: Funny fuel gauge
Post by: hobbit on July 06, 2006, 19:21:35

Wonder if the brake light is on the same fuse as the sender, although it could be an earth problem at the back, either on the lamps or sender

See if any other lights are playing up, indicators/brake/tail etc.

Title: Funny fuel gauge
Post by: Leigh on July 07, 2006, 19:52:11

Everything is working fine so think it must be a bad earth but not really sure how to check or repair  :oops:

Title: Funny fuel gauge
Post by: hobbit on July 07, 2006, 21:51:19

Find the sender unit on the tank, and one of the wires should be connected to earth, try to clean the connector up

Also have a look around for an earth cable round the lights, might be worth removing the bulbs and checking the contacts for corrosion

Title: HELP
Post by: tiltboy on July 08, 2006, 14:16:48

I have got exactly the same problem!! - But on my temp gauge!!  :shock:

If I put the brakes or any of the lights (including indicators - giving a "bounce" to the gauge) or the heater blower, the temp gauge climbs sky high! Now, I have got a brake light out and I think that this is a bad earth in the rear light/tow socket wiring.

Obviously interference from somewhere, but after well over an hour with the multimeter I still can't find it.

First noticed when towing, I pressume the extra lamp draw increases the effect.  :roll:

Glad to see this post though, gives me hope!

Title: Funny fuel gauge
Post by: Leigh on July 08, 2006, 15:43:50

Thanks for that, presume I have to remove the tank to get to the sender in which case I'll wait until the tank is near empty before trying to lower it  :lol:

At Rockingham Landrovers yesterday talking about it and they mentioned someones Landy doing the same thing with their temp gauge

Cheers

Title: Funny fuel gauge
Post by: mark.yellow.series.3 on July 08, 2006, 23:36:27

just a thought, but change the brake light bulbs.
sounds daft but on my frontera when i pressed the brake the side lights came on, the reason was the filiment in the brakelight had touched the side light filiment inside the bulb. also in my scenic, press the brake and the tyre pressure warning light came on, on the dash. that was cured by new bulbs.

Title: Funny fuel gauge
Post by: Leigh on July 09, 2006, 08:51:54

I have a couple of new spare bulbs in the garage so I'll give it a try.
Cheers Mark

Title: Funny fuel gauge
Post by: hobbit on July 09, 2006, 11:15:31

Quote from: "what happened was......."

Thanks for that, presume I have to remove the tank to get to the sender in which case I'll wait until the tank is near empty before trying to lower it  :lol:

At Rockingham Landrovers yesterday talking about it and they mentioned someones Landy doing the same thing with their temp gauge

Cheers

Not knowing the layout of a defender, but if the tank is under the tub, could you not cut a plate out of the tub floor, do the job then screw another plate back down

Title: help!
Post by: tiltboy on July 09, 2006, 12:03:26

Leigh,

Is yours affected by any other electrical load or just the brake lights?

Mine is affected by indicators, side/headlights and heater blower.

Hope you sort it out soon, I'll have another look at mine this afternoon and let you know how I get on.

Cheers,

Jez.

Title: Funny fuel gauge
Post by: Leigh on July 09, 2006, 22:15:23

Know my luck I'd cut straight through the fuel tank  :lol:  Wouldn't want to risk it.

Jez, it's just the brake lights that does it, nothing else affects it

Cheers

Title: Funny fuel gauge
Post by: Bush Tucker Man on July 09, 2006, 23:55:19

Quote from: "what happened was......."

Thanks for that, presume I have to remove the tank to get to the sender in which case I'll wait until the tank is near empty before trying to lower it  :lol:
Cheers

Isn't the Tdi tank sender in the top-edge of the side??

I know the tank had to come out of my Td5 for a new sender/pump