fuel gauge
Melting Slicks
Joined: Jun 2011
Posts: 3,114
Likes: 597
1. disconnect the gauge wire at the sending unit. Gauge should move to full pegged @ ~ 3 oclock.
2. Measure the ohms resistance of the sending unit. Range is ~ 1-90 ohms.
low ohms < 10 would indicate gas tank empty = gauge reads empty , low fuel light on. if it reads > 10 ohms then there is a short in the circuit from the wire to the gauge cluster. Could be fault in circuit or gauge.
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 25
Likes: 0
From: Missouri
depends on what you call easy.
1. disconnect the gauge wire at the sending unit. Gauge should move to full pegged @ ~ 3 oclock.
2. Measure the ohms resistance of the sending unit. Range is ~ 1-90 ohms.
low ohms < 10 would indicate gas tank empty = gauge reads empty , low fuel light on. if it reads > 10 ohms then there is a short in the circuit from the wire to the gauge cluster. Could be fault in circuit or gauge.
1. disconnect the gauge wire at the sending unit. Gauge should move to full pegged @ ~ 3 oclock.
2. Measure the ohms resistance of the sending unit. Range is ~ 1-90 ohms.
low ohms < 10 would indicate gas tank empty = gauge reads empty , low fuel light on. if it reads > 10 ohms then there is a short in the circuit from the wire to the gauge cluster. Could be fault in circuit or gauge.
Melting Slicks
Joined: Jun 2011
Posts: 3,114
Likes: 597
Fuel gauge pegged overfull is usually a open circuit. Resistance > 100 ohms.
Low fuel light on thinks the resistance < 10 ohms. Possible low fuel board fault. You can remove the board and test again. (hard to get hands up there).
