Pissing me off in not a good idea :-((
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I have recon'd a fuel tank sender unit but as fitting it means either the tank has to come out or the boot gets a new vent hole, i've been putting it off. I think getting a new sender for the engine temp, recon sender in the tank and redo the wiring on the cluster to see if one of those fixes the issue.
Difficult one to fathom, what i did notice today was a differential in ohms resistance through the bi-metal winding in the gauge, and all readings were taken when cold. I put this down to old age! Not me, the gauges. Quality earthing is crucial as well.
Thats exactly the same issue I have in the legerra Martin. I've tried three different voltage regs and still the same issue, even hardwired straight to the back of the instrument its duff. Sitting in the drive its all fine but as soon as it starts to get warm off it goes. Maybe try disconnecting one to see if the other acts up on it's own.
I'll have a look in the box marked instruments tomorrow, I really need to test them all somehow, got nearly two full sets of veglia ones and a load of smiths ones that came out of the green phaeton so should work with a ford sender.
I always own up if I f up,
I'm lucky if the fuel gauge in the leggy reads anything as it came from a Crapi.
Yes it was a Smiths Ade. I would appreciate trying another, (will let you have it back if it doesnt work...no big hammers I promise). That one was out of a Lotus Elan and dont think it liked the Ford sender unit. The problem is I only have a small tank and would like the gauge to be accurate ish. If another does not work with out tweaking, I will use a gauge and sender set from CBS.
The front plate is fine...
Was it originally a smiths? if so I probably have one you can err... play with.
What got me to that stage James, was STUPIDITY ....... I wanted the fuel gauge to read accurately when empty, so I went through the calibration process, and after spending a couple of hours had it nearly perfect, but couldn't get it to stop dead on the mark. So I decided to tweak the bi-metal strip ..... just a little bit, but they are not too happy about being tweaked, and it threw the whole calibration out, irretrievably!! Steam from ears and grab big hammer. Been regretting it all day.
So what got you to that point, Paul? Wasn't that a new gauge with your special facia?
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