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Dodgy Fuel Gauge
Greenie - 2/7/11 at 03:25 PM

Right lads you have not let me down so far in the past and I need your help once more.......

Took the Indy out of the garage today to go for a run in the sun, when noticed that the fuel gauge was reading full, now I do know that was not possible, unless the fuel fairy had been in over night.

As I trundled along the road I noticed that needle was up and down spasmodically, didn't worry to much because I knew I had enough fuel for the length of the run I was about to complete.

As I went along the needle decided to stay well past the full mark, when I turn the engine off it goes back to the empty position and when I put the ignition back on it goes flying over past the full position.

Had no trouble in the past....... Any ideas????????

Please help..,..

Regards Greenie


HowardB - 2/7/11 at 05:56 PM

best first guess would be a faulty earth,....


adithorp - 2/7/11 at 06:03 PM

Sounds like the wire from the gauge to the sender is touching/shorting to earth somewhere along the way.


jacko - 2/7/11 at 06:14 PM

BANG


Macbeast - 2/7/11 at 06:35 PM

Best second guess is a short. If I short my sender live to chassis, ther gauge goes to full.


adithorp - 2/7/11 at 07:48 PM

quote:
Originally posted by jacko
BANG


The wire takes full current when the sender unit is at full (0 resistance) anyway so it doesn't burn any thing out. There's enough impedence in the guage to prevent it.


Greenie - 4/7/11 at 07:33 PM

Cheers everyone much appreciated, multi-meter at the ready!!!!!!!!!!!!!!!!!!!!!!


Greenie - 31/7/11 at 05:06 PM

Need further help if possible, when I run a new wire from the tank to he gauge the same thing happens, checked the earth with meter and the seems ok, I now suspect a faulty gauge, any ideas?