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Inaccurate fuel gauge and temp between 3500- 4000 rpm
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Author:  cooperized [ Sun Jun 18, 2017 5:04 pm ]
Post subject:  Inaccurate fuel gauge and temp between 3500- 4000 rpm
Have a problem at higher revs where gauges seem inaccurate- Fuel level can drop from 1/2 tank to 1/4 tank full. I have tested the output of the voltage regulator with the ignition on and it is 9.97 volts. Anyone know what the problem maybe? Should I purchase a new voltage regulator?

Thanks, Scott.
Author:  timmy201 [ Sun Jun 18, 2017 5:10 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
Does the voltage change when you rev the engine?
Author:  cooperized [ Sun Jun 18, 2017 5:26 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
haven,t checked it under higher revs. i'll have to check it.
Author:  drmini in aust [ Sun Jun 18, 2017 5:49 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
Body vibration. They use a vibrating bimetallic strip.
I cured mine by replacing with an electronic one. Thanks wombat. ;)
Author:  brett [ Sun Jun 18, 2017 5:55 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
drmini in aust wrote:
Body vibration. They use a vibrating bimetallic strip.
I cured mine by replacing with an electronic one. Thanks wombat. ;)


Minis are smooth as silk..... LOL
Author:  cooperized [ Sun Jun 18, 2017 6:47 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
How do you get hold of an electronic voltage regulator? Can you place it inside the standard casing so that it looks stock?
Author:  cooperized [ Sun Jun 18, 2017 8:06 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
Thanks for all your replies. i'll checkout jaycar tomorrow and see if I can a 3 pin ic voltage regulator and make something up.
Author:  DavidE [ Sun Jun 18, 2017 8:08 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
cooperized wrote:
How do you get hold of an electronic voltage regulator? Can you place it inside the standard casing so that it looks stock?


Yes, you can. I can refer you to a set of instructions with details of the device that you need to buy to fit inside the case.
http://www.britishv8.org/articles/mgb-v ... ilizer.htm

I used the LM2940T-10.0
Author:  cooperized [ Sun Jun 18, 2017 8:58 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
David, thanks so much for that info, much appreciated
Author:  EKLeigh [ Mon Jun 19, 2017 2:40 pm ]
Post subject:  Re: Inaccurate fuel gauge and temp between 3500- 4000 rpm
Bad earth


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