"Jeepinit" wrote in message
...
Yes access to the sending unit is easy. I ran a direct jumper to the unit
from the gauge with no improvements.

Any Ideas?



"John H." wrote in message
news
On Fri, 15 Aug 2008 09:07:28 -0400, "Jeepinit"
wrote:

Would anyone happen to know how to check or determine if the problem with
fuel gauge is the gauge or the wiring?

test procedures? wiring schematics?

I changed out the gauge and is still inoperable.

Thank you a Great deal!!

Tim


If you can get to the tank's sending unit, move the ground wire and see
if
the gauge operates. My ground wire rivet came loose on the sending unit.
Couldn't see an easy way of making it secure, so replaced the sending
unit.
West Marine carries them.
--
** Good Day! **

John H

The sending unit must be grounded and the guage must be getting 12 volts on
the + terminal. That's what completes the circuit. The sending unit
resistance will vary from a dozen or so ohms to a couple hundred ohms
depending on how much gas is in the tank. You can momentarily short the
wire between the guage and the sending unit to ground and see if the gauge
jumps but don;t hold it on ground as usually there is a little resistance
from the sending unit. Helps a lot if you have a multi-meter.