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| Andy247 Member Since: 06 Feb 2021 Location: Scotland Posts: 8   
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Hi All
I am looking for a bit of help with the fuel gauge , I was driving today with a good quarter tank and only going local. After about 5 mins the fuel gauge started to drop steadily with the light coming on and then hitting empty. Got out and checked for a leak but nothing so continued with the journey with no other issues. Got back home and turned the engine off - back on but the gauge stays on the empty and does not move. Any pointers would be appreciated. year 2000 W plate 90 Thanks Andy |
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24th Jan 2022 1:28am |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 820 
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Interesting actually. My 110 is a 300tdi but with a later td5 type plastic tank and RoW fuel level sender and pick-up fitted.
Wired it in to my 300tdi loom and gauges and all worked spot on for over a year until it suddenly jammed on hard full. This lasted about 6 months until it equally as suddenly started to work again? I did poke around all the connectors and gauges etc but couldn't find a fault, although the gauge would work properly when the correct wire was shorted to earth..... Never did find out why. |
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27th Jan 2022 11:26pm |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1849 
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Why ‘RoW’ level sender? I ask because I have the same sort of set up - a 300Tdi, but a later plastic tank.
I went with the Td5 gauge to try and pair the gauge and sender better, but I think there must be something else in the Td5 wiring to damp oscillations. The gauge works, and reads more or less Ok, but the needle swings about as the level in the tank changes (up/down hill, round corners etc). I have asked about this before, but I think the answer was something to do with measuring resistance (complicated - for me!). Would a RoW sender do the same thing? Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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29th Jan 2022 9:31am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6613 
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The Td5 speedo damps the fuel gauge signal and drives the Td5 gauge.
All Defender senders before the 2.2 Puma are the same electrical spec and are all therefore compatible with any pre 2.2 gauge/cluster. So a pre-Td5 gauge can be used with any pre 2.2 sender. The plastic tank “99MY ROW” 300 Tdi sender unit was used on the 2.4 Puma.  1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Jan 2022 9:46am |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1849
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Thanks Martin,
I think you replied to my last post on this as well. Electrics isn’t my strong suit. If I understand what you’ve said, then by going back to a 300Tdi era gauge I’d get a better match between gauge and sender? I don’t have the Td5 speedo or cluster installed to damp the signal. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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29th Jan 2022 10:22am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6613
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If you don’t fit the Td5 speedo you can’t really use the Td5 fuel gauge. Use a pre-Td5 gauge which is internally damped.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Jan 2022 10:23am |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1849
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Excellent - thanks again. Donald
1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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29th Jan 2022 10:24am |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 820
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I might be wrong but doesn't a td5 tank sender include an in tank lifter pump? The RoW sender is without the pump as that is on the engine.
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29th Jan 2022 4:32pm |
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