Fuel Level Gauge Readings

European strategy specific for 2004 ford mustang euro spec but also modified by SVT and used on the 03/04 cobra. Can be used on all 2002-2004 mustang v8 and v6 manual and automatics. Supports automatic 4r70w control. Can be used on 2001-2004 ford F-150 4.6 / 5.4 ecu's if configured correctly as well.
Turbo4V
Posts: 18
Joined: 2021 Feb 17, 06:15
Location: Melbourne, FL
Vehicle Information: 2000 Mustang
Twin Turbo 4V
2004 EEC-V
FBGI0

Fuel Level Gauge Readings

Unread post by Turbo4V »

My fuel level indicator (in dash) has been way off since replacing the in-tank fuel pump. The response is very non-linear. So I've been attempting to correct the transfer function FN610A, but there doesn't seem to be any obvious change in needle response. Is FN610A not the correct function to "calibrate" the dash needle indication? The attached image shows the amount of correction I've made with no noticeable change.
Fuel Level Transfer Diff Compare.png
decipha
Posts: 4956
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Fuel Level Gauge Readings

Unread post by decipha »

No its mechanical not pcm controlled.

The ohms coming out the sender goes straight to the cluster.

Only way to 'calibrate' it is by wiring up resistors but if its non linear then your sender needs to be fixed.
Turbo4V
Posts: 18
Joined: 2021 Feb 17, 06:15
Location: Melbourne, FL
Vehicle Information: 2000 Mustang
Twin Turbo 4V
2004 EEC-V
FBGI0

Re: Fuel Level Gauge Readings

Unread post by Turbo4V »

Well that would explain it. Thank you.
decipha
Posts: 4956
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Fuel Level Gauge Readings

Unread post by decipha »

yep no problem

that function is just for the ecu to know the fuel level based on the input so it can do obd2 compliance checks after a refuel and in-flight refueling etc..
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