faulty fuel gauge

[Artie]

Sorry if this has already been covered, my fuel gauge read full but it is not.
I have about a 1/4 tank of fuel I puled the sender unit up but not out as i could not figure out how to get it out. as it came up it read empty so i played with the float but even lifting it up a tiny bit it read full again. any help would be appreciated.

[JDNSW]

It would help if we knew which model Landrover you have. Guessing that it is a Series 3, the most likely problem is faulty earthing on the voltage stabiliser, located on the back of the speedo. If it is a Perentie, the most likely problem is that the gauge is not properly earthed.

Hope this helps,

John

[Artie]

It would help if we knew which model Landrover you have. Guessing that it is a Series 3, the most likely problem is faulty earthing on the voltage stabiliser, located on the back of the speedo. If it is a Perentie, the most likely problem is that the gauge is not properly earthed.

Hope this helps,

John

It is a Perentie i have tested all connections for continuity to the chassis and all seemed fine to me but I am not a auto leco :( may have to test again.

[Artie]

just found my gauge lights also do not work could this be related

[JDNSW]

That strongly suggests that your problem is the earth to the instruments (does switching the instrument lights on and off change the reading? Remembering to allow for the slow response of the gauge). I predict your engine temperature gauge is misbehaving as well.

In my similar vintage civilian 110 the problem was that all the earth leads for the gauges end in tags stacked under one of the nuts securing the speedo, with another tag on a wire to earth. This nut was loose, and the fix was to tighten it, clamping the tags together again.

Hope this helps,

John

[Artie]

I will check when missus gets home as 3 kids and my head in a dashboard don't work well my temp gauge works fine so that's why I am puzzeld

[Artie]

Gauge lights fixed was faulty dimmer so bypassed with a spare terminal I found

[Phil B]

Sounds like the same issue I had with mine.
The sender unit had stopped working and only registered 1/4 tank or full.
The sender is available from LR but make sure you are sitting down when they tell you the price.
I am thinking about having the old one rebuilt.

[Artie]

Sounds like the same issue I had with mine.
The sender unit had stopped working and only registered 1/4 tank or full.
The sender is available from LR but make sure you are sitting down when they tell you the price.
I am thinking about having the old one rebuilt.

Phil did you still have the Part number on Hand. may try the usual English suppliers Fingers crossed.

[Phil B]

It is an ADF specific part AYG9825 (VDO I think) and it is not available in the UK.
If you find one for a reasonable price please let me know and we can share freight.
Regards,

[Artie]

Ok Now luck in the UK Famous Four even went to VDO, in reply was told to go to Jaguar land rover Aust.
So I see my only Option as I am not paying $400 for a sender unit. is to get a new sender and gauge from 90" under seat Tank correct me if wrong but they are same?? and whould there be any forseable Problems with doing this.

[Phil B]

Thats what i thought.
The problem is that the position of the sender unit on the Perentie requires that the fuel pipe turns at 90deg as soon as it comes out of the tank otherwise the fuel pipe clashes with the seatbox cover under the seat.
LR do not make a sender unit other than the $400 (plus postage)Perentie unit that will fit without modification of the seat box and the sender unit.
I modified a Defender unit (that cost $60) and the seat box.
Another way would be to take the fuel return back into the tank at another location (the blanking plate at the front of the tank would work) and then using the same unit without modifications.
Hope this helps.

[Artie]

Famous Four have offered me this sender. Fuel Tank Level Unit - FF000839 - 90/110 and Defender (http://www.famousfour.co.uk/new_parts/ff_part?part=1980) and obviously a new gauge.

[Phil B]

This looks like a series 3 sender. Check that it is suitable for diesel.
It may work but the float is the wrong side. That can be changed over but that may mean that the guage reads backwards. Again this can be fixed.
It is worth a go.
Please let me know how you go.

[Artie]

This looks like a series 3 sender. Check that it is suitable for diesel.
It may work but the float is the wrong side. That can be changed over but that may mean that the guage reads backwards. Again this can be fixed.
It is worth a go.
Please let me know how you go.


Yes at the Price its worth a go i don't mind being the test subject for all other Perentie owners. I am trusting a parts interpreter and I like a punnt :P

[Phil B]

Good on you. Please let us know how you go.
Regards,

[Artie]

Installed seems to be working will see as I use more desile

[Blknight.aus]

According to the training pam with regard to vehicle systems, sub-systems and components

"The purpose of the fuel sender is to tell lies to the fuel gauge"

[Artie]

Success well after minor float arm modification not as accurate as I would like but hey what gauge is showing just in the red with about 4" in the tank and low fuel warning works.