Hey guys,
the fuel gauge in my LX is not registering anything at all. I've earthed the gauge out to test it and it runs right the way through to full, so i figure its not the gauge.
I followed the advice of a similar problem in this forum and re-earthed the tank sender unit but still no reading...
Is it possible to remove the unit and clean it without removing the tank... is there anything else it could be...
the wire running from the unit, into the boot and then up the drivers side into the harness seems to be ok...should I isolate that wire and test it for resistance/breakage?
any help is much appreciated
Cheers,
Nik.
p.s. yes, i had the ignition on when I was checking the unit, and yes there is fuel in the tank (bout 20L)
Fuel Gauge Fun...
Started by
_Torana288_
, Jul 02 2006 07:48 PM
19 replies to this topic
#2
makka
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Posted 02 July 2006 - 08:29 PM
mine reads at empty with about that much petrol in my tank.......
#3
TerrA LX
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Posted 02 July 2006 - 08:32 PM
try more fuel first.
#4
makka
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Posted 02 July 2006 - 08:36 PM
<is with^
#5
_Torana288_
_Torana288_
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Posted 02 July 2006 - 08:43 PM
cheers guys, will try in the morning. Seems strange that a 54L capacity tank wont read at 20L though...nonetheless..
thanks again
Nik.
thanks again
Nik.
#6
_wombat_
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Posted 03 July 2006 - 05:47 AM
pull the sender out of the tank and make sure the float does still float,while its out move it into the up position and see what your gauge does. thats what i would be doing anyway.
wombat
wombat
#7
_Yella SLuR_
_Yella SLuR_
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Posted 03 July 2006 - 01:13 PM
^ or get a spare fuel guage, attach the wire, earth out the base and see if it operates the guage. If yes then it is the sender, if not, the problem lives elsewhere.
Edited by Yella SLuR, 03 July 2006 - 01:14 PM.
#8
_Torana288_
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Posted 03 July 2006 - 06:16 PM
yeah cool, haven't tried more fuel yet...but i will try all of if the above if i have to
can i remove the sender without taking the tank out...obviously i've got to siphon the fuel out...or have a PULP shower...
thanks for the advice guys
Nik.
can i remove the sender without taking the tank out...obviously i've got to siphon the fuel out...or have a PULP shower...
thanks for the advice guys
Nik.
#9
_wombat_
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Posted 04 July 2006 - 02:16 AM
sender is in the top of the tank under boot mat i think. could be wrong but most cars have em on top
#10
TerrA LX
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Posted 04 July 2006 - 02:30 AM
how long's the car been sitting.
#11
GML-31
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Posted 04 July 2006 - 07:21 AM
sender is at the right front of tank and is accessable from under the car. It is a clip arrangement witha O-ring seal... very easy to remove and doesnt require a complete empty tank to remove as long as car is level.sender is in the top of the tank under boot mat i think. could be wrong but most cars have em on top
#12
makka
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Posted 04 July 2006 - 11:44 AM
or face the car up hill if you have a bit more petrol in it
#14
LX2DR
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Posted 05 July 2006 - 07:47 PM
Think i'm right here, take the wire from the sender and short it direct to earth.
The gauge should head for full quickly. Get someone else to watch for you.
Important is not too long, this will check the entire system from the sender to the gauge. If the gauge works it has to be the sender.
The gauge should head for full quickly. Get someone else to watch for you.
Important is not too long, this will check the entire system from the sender to the gauge. If the gauge works it has to be the sender.
#15
_Torana288_
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Posted 06 July 2006 - 11:18 AM
so that wire can be pulled out from the tank?? seems to be in there pretty snug, so i wasn't sure if it went right through or if it attached to the sender externally to the tank...
will try...going to try a lot of things with this problem...i'll let you know how i get on, thanks for the help
Nik.
will try...going to try a lot of things with this problem...i'll let you know how i get on, thanks for the help
Nik.
#16
LX2DR
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Posted 06 July 2006 - 03:47 PM
Yes, round pin.so that wire can be pulled out from the tank??
#17
tinkers
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Posted 07 July 2006 - 12:56 AM
#18
Redslur
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Posted 07 July 2006 - 12:06 PM
I have exactly the same problem. Tried all the suggested things and even replaced the sender unit. My suspicion is it is an earth problem with the gauge. Mine only doesn't read accurately when the tank is low on fuel. It seems to be alright when full.
#19
enderwigginau
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Posted 17 July 2006 - 02:25 PM
LH/X should read Empty at 15L as this amount of fuel is generally necesary to prime the fuel pump.......height reasons.
You can obviously go lower than this but Holden planned on 15L.
Grant..
You can obviously go lower than this but Holden planned on 15L.
Grant..
#20
Dangerous
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Posted 18 July 2006 - 12:21 PM
AAAhhhhhhhhhhhh!!!!!!!!!!Think i'm right here, take the wire from the sender and short it direct to earth.
DON'T ever do that to an LX gauge - not even for a short time, you'll cook it. All the LX gauges were designed for a minimum sender unit resistance of 10 ohms. If you really want to check the gauge, go and buy a 10 ohm 1/2 watt resistor at around 10 cents, and put it between the sender wire and earth. That should make the gauge read zero. If you're keen, a 68 ohm one will make it read full scale, and a 27 or 33 ohm one will make it read mid scale. You can use the same resistors to check the fuel, oil and temp gauges.
Edited by Dangerous, 18 July 2006 - 12:23 PM.
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