Need help with fuel level gauge

[protege94 P.R]

I just install a Microtech on my 94 Protege and this gauge is not working anybody can tell me how to make it work again without the stock ecu?

[me109]

Nothing to do with ECU. Visually inspect the sender.

[protege94 P.R]

Ok so its not connected to stock ecu at all

[protege94 P.R]

Ok so its not connected to stock ecu at all, any idea on what cables should have ground and witch one have 12V on the sender

[ftjandra]

Correct, the sender is not connected to the ecu at all. From the FSM, the black/green wire should be grounded and the yellow wire goes to the cluster. The sender is just a variable resistor with a pull-up in the cluster.

--Ferdi

[protege94 P.R]

Thanks, so there is no 12v in the sender

[me109]

There will be power for the pump, obviously, but not for the sender.