It was a long time ago but.. I seem to remember that after sitting for
years, my fuel sender was stuck, had to
remove it and work it loose. That could explain some of your symptoms.
Your Temp gauge works. You can
substitute it with the fuel gauge (and vice versa) to see if the gauges
work.
Gary
On 10/2/2016 4:07 PM, Larry Mayfield via Tigers wrote:
>
> Well, not much good today. First off, I tried the MGB unit from VB.
> As mentioned it was and is different in mounting and connections. I
> did not play with it long however and plan to do more. I next set up
> Theo and Tom?s electronic unit. First failure was a broken anti
> rotation tab on the 6061-T6 bracket. I wil remake one tomorrow from
> softer aluminum. But I grounded the unit and put the G Ign and LGG
> wires onto the posts. Because I had broken one tab, I covered the
> post which will come into chassis contact if rotated, with shrink
> tubing. Put more gasoline in car. Use a stick with magic marker tattle
> stripe and stuck it into the tank: looks like I have maybe a 3^rd of a
> tank now. Definitely enough to cause the needle to move if it wants
> to. I had just finished reinstalling the entire heater water plumbing
> also including the cast iron and copper T pieces. I installed a new
> Temp sensor from Rick at SS. I used the OEM sender wire and ground
> wire at the cast iron T. Gage wiring was per CAT diagrams and one of
> the list members wiring on his car: LGG to the left side of the Temp
> meter and right side on the Fuel meter. Satisfied I was not gonna fry
> anything I tried starting the car. Start and immediately die. OOPS, I
> know what this is: the White blue wire on the ballast came off. Yup.
> And it had apparently touched ground somewhere as well as the 35 amp
> fuse for that was blown. New fuse wire back where it goes. Car starts
> albeit a tad flooded. After some fiddling, car idled nicely. This
> after sitting for 7 years. I let the thing sit there and idle to get
> the temp up. Meter never moved at all. Ditto fuel Temp was below 120
> on meter, fuel is something around 1.001 gallons and hanging there. It
> never moves. Just for chuckles I removed the fuel gage meter and
> sender from the circuitry and zappo, tempo gage goes full scale. I
> repeat this with the fuel gage meter and temp out of the loop and fuel
> gage does not move. Tomorrow I am going to find a couple of
> compatible potentiometers and use them as senders in each circuit.
> That way I can see it eh meters themselves are toasted or ok. I have
> somewhere in my pile of testing and experimenting residue, I am sure
> to have two pots similar to what the senders are. I will try and find
> a couple that are 1K max and near zero at the low end. That kinda
> mimics the senders. That way, I can mix and match the wiring on the
> meters easily and adjust to the pots to mimic the actual senders.
>
> Anybody see anything wrong here?
>
> If not, more info tomorrow at COB or thereabouts
>
> mayf
>
> _________________________
> drmayf
> Worlds Fastest Sunbeam, period.
> 204.913 mph flying mile
> 210.779 mph exit (not top) speed
>
>
>
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