Fuel gauge overvoltage issue
#1
Fuel gauge overvoltage issue
Ok, I have a 1995 honda civic ex with the 1.6 liter engine. A while ago the fuel gauge started showing full intermittently when it wasn't. Eventually it stuck there. I tested the sending unit, which is fine, so bought a gauge from the junk yard. Had the same issue so bought a brand-new one. Same thing. Finally broke out the volt meter and checked it. Instead of the 5 to 8 volts it should be, its 12 to 14 volts. Haven't changed any wiring or added anything, so not sure what is causing it. Any insight would be much appreciated.
#5
Re: Fuel gauge overvoltage issue
The gauge head may not be grounded. The three screws on the back of the gauge are ignition power, wire to the tank, and ground. With the wire to the tank open, the needle should go to less than empty when the key is turned on. Test the voltages on the back of the gauge with the cluster pulled out of the dash but still plugged in.
#6
Re: Fuel gauge overvoltage issue
Ok, I have a 1995 honda civic ex with the 1.6 liter engine. A while ago the fuel gauge started showing full intermittently when it wasn't. Eventually it stuck there. I tested the sending unit, which is fine, so bought a gauge from the junk yard. Had the same issue so bought a brand-new one. Same thing. Finally broke out the volt meter and checked it. Instead of the 5 to 8 volts it should be, its 12 to 14 volts. Haven't changed any wiring or added anything, so not sure what is causing it. Any insight would be much appreciated.
#7
Re: Fuel gauge overvoltage issue
You can only measure ohms while the circuit is completely dead. If you see a negative reading on an ohms test, that means there is some residual voltage messing up the reading.
Unplug the cluster and measure the resistance to ground through the sender, do this at both the dash end and the tank end of the wire.
With sender circuit disconnected and key on, gauge should read below E.
Unplug the cluster and measure the resistance to ground through the sender, do this at both the dash end and the tank end of the wire.
With sender circuit disconnected and key on, gauge should read below E.
Thread
Thread Starter
Forum
Replies
Last Post
keith shumaker
Honda Civic / Del Sol (1992 - 2000)
7
07-06-2016 02:35 PM