This article supersedes TSB 06-10-13 to update the Service Procedure.
Some 2005-2006 Mustang vehicles may have an erratic fuel gauge concern (does not read Full or reads Empty when tank is full). This may be caused by poor electrical connections at the fuel sender, at the in line harness connector, and/or faulty fuel sender card.
Follow the Service Procedure steps to correct the condition.
BE SURE TO CHECK FOR DTCs IN ALL OTHER MODULES.
AFTER A FUEL FILL UP, THE TIME FOR THE FUEL GAUGE TO MOVE FROM EMPTY (E) TO FULL (F) RANGES FROM 2 SECONDS TO 55 MINUTES DEPENDING ON WHICH OPERATING MODE THE FUEL GAUGE IS IN. SEE WORKSHOP MANUAL (WSM), SECTION 413-01 FOR DETAILS.
Check for DTCs in all modules. Perform normal WSM, Section 413-01 diagnostics, for any fault codes retrieved. If normal diagnostics do not lead to concern resolution, then continue with this TSB.
If the diagnostics in WSM, Section 413-01 indicate that the fuel sender is at fault, then replace the appropriate fuel level sensor per WSM, Section 310-01.
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
2005-2006 Mustang: Replace The Fuel Level Sender, Includes Time To Release Fuel System Pressure, Remove Back Seat Bottom, Drain Fuel (Do Not Use With 9275A)
Use SLTS Operations If Available; Claim Additional Diagnosis Or Labor Performed As Actual Time