Re: Terrano fuel gauge issue

kiwipete · Post by **kiwipete** » Tue Aug 06, 2013 11:08 am

I seem to have an issue with my fuel gauge sitting just below the 1/2 way mark and not moving. I have disconnected the sender unit at the tank and its made no diference. I suspect the voltage regulator on the instrument panel may be the source of my problems, ill pull it out in the weekend and gave a look. Has anyone else had this issue?

nizute · Post by **nizute** » Tue Aug 06, 2013 12:13 pm

i can send the unit out of my dash if you want to try it?

kiwipete · Post by **kiwipete** » Tue Aug 06, 2013 12:24 pm

nizute wrote:i can send the unit out of my dash if you want to try it?

Yeah. I spose they would all be the same eh?

nizute · Post by **nizute** » Tue Aug 06, 2013 12:42 pm

worth a try you can have it, i dont need it.
Did you get my pm?

kiwipete · Post by **kiwipete** » Tue Aug 06, 2013 5:27 pm

Well I decided to fill the truck up on the way home from work and the needle went to the top of the gauge, all be it slowly. Can anyone with a diesel confirm if the gauge reads when the key is out?

Bonus · Post by **Bonus** » Tue Aug 06, 2013 8:10 pm

nah gauge doesn't read with the ignition off

kiwipete · Post by **kiwipete** » Tue Aug 06, 2013 10:21 pm

Bonus wrote:nah gauge doesn't read with the ignition off

Thanks, something is up with mine then, it still reads when the ign is off and key is out?

skidmark · Post by **skidmark** » Thu Aug 08, 2013 6:50 pm

the needle isnt rubbing on the guage face? have seen a few nissans with this problem.cheers

kiwipete · Post by **kiwipete** » Thu Aug 08, 2013 8:50 pm

skidmark wrote:the needle isnt rubbing on the guage face? have seen a few nissans with this problem.cheers

Nope, that was the first thing I looked at.

Akzle · Post by **Akzle** » Fri Aug 09, 2013 3:23 pm

disconnect the sender, turn the key on and check gauge position.

ground the wires from the sender, check the gauge position.

if it goes full one way or the other, your sender is shit, possibly a shot ground connection.
if it doesn't the connection or gauge is shit. test the wiring, dismantle the dash.

kiwipete · Post by **kiwipete** » Fri Aug 09, 2013 5:12 pm

Akzle wrote:disconnect the sender, turn the key on and check gauge position.

ground the wires from the sender, check the gauge position.

if it goes full one way or the other, your sender is shit, possibly a shot ground connection.
if it doesn't the connection or gauge is shit. test the wiring, dismantle the dash.

Thanks for this, I shall be trying as you suggest after work tomorrow :wink:

kiwipete · Post by **kiwipete** » Sat Aug 10, 2013 10:28 pm

OK; I unplugged the sender and turned the key on, no change of the needle.

With the key on I grounded the wires. One side was the low fuel warning lamp wire, the first time I have seen this come on. :shock:

There are 3 wires, one for the low fuel warning, a ground and the other for the variable resistor on the sender unit.

Grounding the other side made the gauge reach the full mark.

I turned the key off with the wires open and the gauge went to empty.

I am suspecting there is nothing wrong with either the sender or the gauge and am beginning to think it may have been an ailen/gremlin in the system :twisted:

I sprayed the connector I separated with contact cleaner and some silicone to prevent future water ingress.

PS the gauge is reading true with the amount of fuel I normally use form the K's travelled on a full tank.