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1998 to 2002 ecm conversion help

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Old 12-03-2017, 12:15 PM   #1
gearheadib
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Default 1998 to 2002 ecm conversion help

Okay I have converted the ecm in my 1998 to a 2002 ecm with only one problem, the fuel gauge. With the setting for the 1998 fuel system the gauge reads dead empty with a full tank. when I change all fuel system settings to 2002 the gauge works but only reads 3\4 full with a full tank.where do i need to look to get the gauge to work right with the 2002 ecm? I'm tuning with HP tuners.
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Old 12-07-2017, 02:51 PM   #2
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Okay a tuner in my area told me i need to cut a wire on the secondary tank sending unit but didn't remember which one. has anyone on here done the this before?
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Old 12-07-2017, 03:51 PM   #3
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Before I started cutting wires I'd try to find a schematic for both and I would find the voltage values each computer is looking for to present to the gauge. Bill Curley would be my go to guy if I were you. Good luck and Merry Christmas!
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