Gas/Amp dashboard gauge from a 74

[guy_geo]

Will that unit work on a 72 240Z??

The reason I'm asking, is the sending unit is supposed to be different on a 74....

[sblake01]

As I recall, there are more wires on the 74 and up units than there are on the earlier ones. You'd have to compare wiring diagrams to see what does what. Even if you get that part figured out I'm not sure the 74 gauge would match up with the 72 sender.

[guy_geo]

ok, that makes sense.

[Glliw]

If it doesn't work out for you, I'll take that '74 gas gauge off your hands if it works.

[beezee]

Just ordered and received a new tank sending unit from Nissan #25060-E4100 for an early 74 260 . The sender has 2 wire terminals 1 to gauge and 1 to ground. The gauge in the dash may be dash may be different due to the harness connector

[guy_geo]

Reason I'm asking, I just got a brand new sending unit from MSA (Same as BEEZEE), same problem with the reading on the dash for the gas..

Full (see the gas in the filler neck), reads only 3/4 of a tank..

[Duffman]

I have the same issue; full tank only reflects 3/4 full on the gauge!

[guy_geo]

I did a search on the tech forums, and all my vents lines are ok.. good grounf, old unit reads the same Ohms as the new one..

Je suis dans la merde......

[sblake01]

You know, you can adjust the float so that it reads higher or lower by carefully bending the arm in small increments until you reach you desired reading. Bend down if it reads low or up if it reads high. That is, if you are certain that everything else is in proper working order and it"s reading incorrectly. So, Vous n'êtes pas vraiment dans la merde. (pardon if my French isn't so good)

Edited August 21, 2008 by sblake01

[Duffman]

Never thought of that, Stephen. Since one cannot open the float while there is a full tank, what would be the best procedure for doing this? Am assuming you might have to do this over a few tanks of gas to get reasonably close.

[sblake01]

That's about it...trial and hopefully not much error.

[sblake01]

And in the other post I probably should have said 'Le merde n'est pas trop profond.'