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Unread 04-20-2014, 07:32 PM   #1
GoodtimeKenny
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Aftermarket Fuel Gauge after 4.3 swap

I did my 4.3 swap and everything is ready and running....but the fuel gauge. I am running Equus 8000 series gauges, the fuel gauge is for a Chysler sending unit. The gauge is supposed to read 10ohm full and 75ohm empty, problem is the chrysler sending unit is putting out over 200ohm. Has anyone done this swap and had issues hooking up a fuel gauge?

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Unread 04-21-2014, 07:12 PM   #2
ky-homelite
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No clue, but dang do those gauges look good!
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Unread 04-28-2014, 09:08 PM   #3
GoodtimeKenny
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Thanks!
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Unread 04-28-2014, 09:40 PM   #4
Ryanmccartney
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I have had this issue I found a sending unit from auto wrecker and adapted to existing jeep fuel canister in tank

I did this and high pressure fuel pump when I installed the 5.7

If your gauge is programmable it makes this really easy

Hope this helps

Cheers
Rye
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Unread 04-29-2014, 02:31 PM   #5
Jonny Jeep
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The stock specs for the fuel sender are 20 ohms full, 220 ohms empty.

Other than getting a gauge to match those specs, in order to get the right sort of resistance for your gauge, you could try running a resistor in parallel with the fuel sender to lower the resistance.

A 110 ohm resistor would give give resistances of 17 full and 73 empty.
A 120 ohm resistor would give give resistances of 17 full and 78 empty.

Actual values would differ slightly due to resistance tolerances of the sender and parallel resistor. At 17 ohms you'd probably never see a full indication with a full tank, but you would get a pretty accurate indication of low fuel which is obviously more important. Either one should work pretty well for you.
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Unread 04-30-2014, 04:04 PM   #6
GoodtimeKenny
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That's the kind of info i have been looking for! Thanks!
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