Hi all,
I have a:
Prado GXL
Late 04 Model
6 Sd Manual (The very first of the 6 spd's in 120 shape)
I have had my Prado converted to Gas since Dec 07. The whole thing works flawlessly - except the fuel gauge. As they have taken the rear tank out, the gauge just doesn't know what to do. The 90L light has never worked since and the problems with the gauge are as follows.
Installation was by The Gas Man - Sydney.
A 50 ohm 5 Watt resistor was placed across two of the wires on the loom which normally goes to the gauge in the rear tank. This resulted in the gauge measuring half full when the tank was FULL. This also means that the fuel light stay's on for ages before you actually run out and 1/4 full isn't really 1/4 but more then 1/4 etc. So it was all screwed up.
I took it back and they put a variable resistor in place. After setting it at Full, with a full tank it worked till half tank and thats where the fuel ran out - and stranded the miss's miles from the servo. As you need petrol to start the engine, before it switches to gas !!...
Took it back again and they have put a 5 ohm 5 Watt resistor in. Now the gauge shows just above half - and I know how much fuel is in it, so in reality the fuel light should be coming on and gauge reading almost on empty and I should only have about 100k to go... not just over half a tank.
So in short - The Gas Man doesn't seem to know what else to do and nothing seems to fix the issue. Does anyone here have any knowledge on the inner workings of the electronics in the gauge systems on the Prado?
I really need an accurate gauge as it is a safety concern on longer trips miles from anywhere etc. No doubt you should always carry extra fuel but a working gauge is a must...
Any electronic guru's out there willing to take a punt at this ??
The annoying thing is that there is something different about my model because The Gas Man has converted heaps of the 120's and has never had this issue, however, they did contact a few other converters as well as EMCO (Gas systems) and they have heard of rare issues where the usual resistors don't work on the gauge.
Cheers
Tim
I have a:
Prado GXL
Late 04 Model
6 Sd Manual (The very first of the 6 spd's in 120 shape)
I have had my Prado converted to Gas since Dec 07. The whole thing works flawlessly - except the fuel gauge. As they have taken the rear tank out, the gauge just doesn't know what to do. The 90L light has never worked since and the problems with the gauge are as follows.
Installation was by The Gas Man - Sydney.
A 50 ohm 5 Watt resistor was placed across two of the wires on the loom which normally goes to the gauge in the rear tank. This resulted in the gauge measuring half full when the tank was FULL. This also means that the fuel light stay's on for ages before you actually run out and 1/4 full isn't really 1/4 but more then 1/4 etc. So it was all screwed up.
I took it back and they put a variable resistor in place. After setting it at Full, with a full tank it worked till half tank and thats where the fuel ran out - and stranded the miss's miles from the servo. As you need petrol to start the engine, before it switches to gas !!...
Took it back again and they have put a 5 ohm 5 Watt resistor in. Now the gauge shows just above half - and I know how much fuel is in it, so in reality the fuel light should be coming on and gauge reading almost on empty and I should only have about 100k to go... not just over half a tank.
So in short - The Gas Man doesn't seem to know what else to do and nothing seems to fix the issue. Does anyone here have any knowledge on the inner workings of the electronics in the gauge systems on the Prado?
I really need an accurate gauge as it is a safety concern on longer trips miles from anywhere etc. No doubt you should always carry extra fuel but a working gauge is a must...
Any electronic guru's out there willing to take a punt at this ??
The annoying thing is that there is something different about my model because The Gas Man has converted heaps of the 120's and has never had this issue, however, they did contact a few other converters as well as EMCO (Gas systems) and they have heard of rare issues where the usual resistors don't work on the gauge.
Cheers
Tim
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