FJ 40 Fuel Gauge Help (1 Viewer)

Joined
Mar 26, 2017
Messages
57
Location
Virginia Beach
I am attempting to rebuild a dash cluster with aftermarket gauges. Volt, oil & temp identified. Can someone provide any information on a fuel gauge I can use that will work with my stock, under the passenger seat gas tank and the original sending unit.
TK
 
Joined
Jan 9, 2020
Messages
155
Location
NorCal
In in the same boat. When I bought my 40 it had a functional aftermarket gas gauge with a matching aftermarket sender. But I scrapped the sender and went stock, now gauge just reads full all the time.

The problem is matching up the ohms from the sender to the gauge. I did find some “programmable “ gauges on Summit but don’t know if they will work.
 
Joined
Jan 9, 2020
Messages
155
Location
NorCal
If I find an answer I’ll let you know. Right now it’s a can of worms I don’t want to open because for me I will have to replace my tank, sender and gauge.
 
Joined
Jun 5, 2007
Messages
5,071
Location
Brea, Calif.
 
 
Ohms values changed at 9/72, plus pre 9/72 also worked on a 7 volt drop, so almost impossible to do anything with the pre 9/72, but rigs produced after 9/72 work on a 120 ohms empty by 17 ohms full, and on a full 12 volts.
 
Joined
Mar 26, 2017
Messages
57
Location
Virginia Beach
Jim, thanks. Sounds like I'm SOL since I am using a tank from a 70. Perhaps I need to go old school and keep a wood dowl rod handy as a "dip stick"
 

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