Theknifemaker

First I have searched for this. I have just replaced the fuel sending unit with a new one from Mazdatriz and I get no reading on the gage. I unplugged the fuel sending unit and jumped the wire and got no movement from the gage with ignition on. Have checked meter fuse and its OK. Any thing else I can check? I am stumped. 81 base model.

trochoid

iTrader: (6)

Pull the dash cluster and check the gauge itself. On the back of it there is a bar with fine white wires wound around it. If there is any discoloration of those wires, blackening or browning, the guage is toast.

darkfrost

iTrader: (1)

Does the plug have any corrosion on it? If so, try cleaning it up a bit. Otherwise, it sounds like its the gauge as trochoid said.

Theknifemaker

If the gage is toast do I have to replace the complete system (fuel, tach, speedometer etc)?

trochoid

iTrader: (6)

Nope, just the dual gauge on that side.

tboy84

I am having a similar problem with my newly purchased 82 model. I will be doing some troubleshooting to verify that it is, in fact, the gage that is the problem. That said, do you know where the best place is to purchase a fuel gage? Online? Auto parts store? Junk Yard? Any help would be great. Links to sites would be awesome. Thanks.