aka Keith
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| posted on 13/9/10 at 03:52 PM |
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fuel guage and sender woes
Afternoon folks. my car has a fuel gauage that has never really worked, and I would like to sort it out.
the problem, is that the guage has been built into the dash with custom made dials, so easy replacement and or easy access it is not (Scuttle off etc
etc)
The sender is self calibrating (I know I do not understand it either)
Now to fix the fuel guage I need to potentially replace the sender, the guage itself or both.
If there any way I can work out what ohm readings my fuel gauge is set up for.
I could find no readings on the guage, and I cannot use the current sender, as it is a law into itself. So is there any way I can easly work out what
range works with the existing guage?
cheers
Craig
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mistergrumpy
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| posted on 13/9/10 at 05:07 PM |
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Smiths gauges follow the European standard of 10 ohms empty and 180 ohms full and the American standard is 240 ohms empty and 33 ohms full.
The senders that are a long wire arm with a float on the end like the Ebay ones are 240 to 33 if this helps at all.
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StrikerChris
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| posted on 13/9/10 at 05:20 PM |
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My fuel gauge is 90 mile on the trip meter,used to be 100 until the inevitable happened!
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snapper
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| posted on 13/9/10 at 07:25 PM |
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I would have thought a self calibrating gauge would need a button or dipswitch to be pressed when the tank is either empty or full, probably on the
back if the gauge someware
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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aka Keith
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| posted on 14/9/10 at 07:33 AM |
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Thanks for the replies.
the guage is not self calibrating, but the sender is. Now given that the reading on the guage is faulty, I am trying to find out if it is possible to
work out what ohm range the guage works too, without taking the gauge out of the car.
That way I can replace the sender to see if that fixes the problem, and then replace the gauge itself, if I have too.
any ideas?
cheers
Craig
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JF
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| posted on 15/9/10 at 05:00 AM |
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Get a potentiometer from maplin or the like. For example: http://www.maplin.co.uk/Module.aspx?ModuleNo=6499&OrderCode=UH00A
Disconnect your sender and put the potentiometer in its place. Turn it till the guage displays full/empty. Cut the power and measure the resitance
across the potentiometer.
Should work, although I never used it on fuel gauges.
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aka Keith
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| posted on 16/9/10 at 01:31 PM |
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Thanks JF,
Maplin thingies bought and I hopefully try the idea on the car this weekend.
Much appreciated, and I will let you know how I get on.
cheers
Craig
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