Fuel Gauge (replace, gas, Mustang, V6)

[John Buettner]

Help please. 05 Mustang V6 all stock. The fuel gauge pegs past full. If I pull # 67 fuse ( instrument ) and replace it (same fuse ) the gauge returns to normal. This happens randomly.

[Axle grease]

Originally Posted by John Buettner

Help please. 05 Mustang V6 all stock. The fuel gauge pegs past full. If I pull # 67 fuse ( instrument ) and replace it (same fuse ) the gauge returns to normal. This happens randomly.

IMO, maybe a sending unit? Have you ran the tank extremely low many times? How about overfilling or topping it off where gas runs out one too many times? I would start there. BTW, it's inside the tank.

[John Buettner]

Thanks, I always keep the tank above half and have never over filled the tank. hope it's not the sending unit. Could it be a relay sticking ?

[Axle grease]

The problem is usually in the switch. Most but not all fuel gauge reading haywire problems are caused by the sending unit (manly the contact points) in the switch. Here is what it looks like. MOELLER Sendinguni at West Marine

[Axle grease]

Replacing Your Fuel Sender - Fuel Tank Sending Unit Replacement - Replacing Fuel Sender for Gas Gauge Correction

[John Buettner]

Thanks, Ag. You have been very helpful----- access is in the trunk under spare tire.

[Axle grease]

Originally Posted by John Buettner

Thanks, Ag. You have been very helpful----- access is in the trunk under spare tire.

It's not too hard. You can do it man!!!! LOL