GU patrol Sub tank guage not working

Submitted: Sunday, Nov 04, 2012 at 20:34
ThreadID: 98860 Views:8975 Replies:4 FollowUps:3
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Hello to all.

ive just got my GU back after getting a engine conversion done. Also got long range tanks put into both the main an sub. The main tank is working fine, gauge in the instrument cluster is working. But the sub tank doesn't seem to work, the gauge doesn't even move. ive filled it up. drained it. checked fuses all seems ok but was wondering is there anythin else i would need to check. not sure if the original sender from the old tank would still work in the new tank or not. but it was all fine with the old tanks.

any help or advice would be great.

cheers
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Reply By: Member - Longtooth (SA) - Sunday, Nov 04, 2012 at 22:50

Sunday, Nov 04, 2012 at 22:50
Read this. Haven't read it but there are many replies to similar problems such as yours.

http://www.patrol4x4.com/forum/gtsearch.php?cx=partner-pub-7865546952023728%3A5387141830&cof=FORID%3A11&ie=UTF-8&q=sub+tank+quantity&sa=Search&siteurl=www.patrol4x4.com%2Fforum%2F&ref=&ss=7285j4559371j19

Have a good read.

Rusty
AnswerID: 497928

Reply By: Cravenhaven - Sunday, Nov 04, 2012 at 23:51

Sunday, Nov 04, 2012 at 23:51
I'd take it back to the installers and get them to fix it. There is no reason at all for the gauges not to work after fitting long range tanks.

Many people have installed long range tanks and the only problem that can (or more likely WILL) occur is that the gauge will have to be adjusted so that it will show 0-full when the tank is 0 - part full. This is because the sender is not long enough for the extended depth tank.
cravenhaven

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AnswerID: 497932

Follow Up By: GEMAC Solar and Power - Tuesday, Nov 06, 2012 at 16:37

Tuesday, Nov 06, 2012 at 16:37
I agree with caravan haven
If it was OK prior to them working on it.


It Is Their Problem and THEY NEED TO FIX IT

Geoff
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Reply By: Member - cherrywipe - Monday, Nov 05, 2012 at 10:23

Monday, Nov 05, 2012 at 10:23
Hi had similar problem with My 4.2,fixed it by disconnecting battery ,wait around 10 mins
Reconnected and working again. Nissan advised the cure.Problem was caused by Me removing the fuse,but needed resetting by battery disconnect .
Good luck, Cherry.
AnswerID: 497948

Reply By: Casperwa - Monday, Nov 05, 2012 at 14:38

Monday, Nov 05, 2012 at 14:38
cheers for the advice. tried the battery thing but nothing. is there a solinoid some were that couldve been disconnected when the engine mod was done.?

ill be taking it back to the guys that did the conversion but just tryin to get some ideas on what it could be . as there not sure either. as the main tank is working fine.
AnswerID: 497952

Follow Up By: Cravenhaven - Monday, Nov 05, 2012 at 17:24

Monday, Nov 05, 2012 at 17:24
From what i can see from the wiring diagram there are 2 wires connecting to the sub tank fuel sensor. One is Black which goes to ground, the other is Green/Yellow which goes via a couple of other connectors to the subtank control unit. The other connectors referred to are common to the main fuel tank sensor as well, so I cant see them being the trouble.
I guess the only things to try are:
1. Disconnect the plug at the subtank and connect a multimeter set to ohms to the Green/yellow and the black wires going to the sensor. It should read something other than infinity or 0 depending on how full your subtank is. If you can pull the sender out of the tank then moving it up and down should show a corresponding movement in the ohms reading.
2. With the plugs in and the ignition on, use a multimeter set to volts and see if there is any reading across the G/Y and Black wires. It should read something.

BTW does the subtank light come on?.
cravenhaven

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Follow Up By: Casperwa - Wednesday, Nov 07, 2012 at 16:14

Wednesday, Nov 07, 2012 at 16:14
Cheers for the tips Craven,

hope fully get a chance to check the wires over the week end.

as for the sub tank light. it hasnt come on since i got the car back. unfortunitly i had to bolt back up north so taking it back to the guys that installed it is out for time being but they are aware and if needed any labour costs to sends to them so yeh.

Sub tank is empty now as i drained it befor i left perth. no point keepin that fuel in there if i couldnt use it.the tank its self is easy to get out from what i can see.

cheers
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FollowupID: 774038

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