Instruments - Erratic Fuel Gauge Readings

TSB 08-4-17

03/03/08

ERRATIC FUEL GAUGE

FORD:
2005-2006 Mustang

This article supersedes TSB 06-10-13 to update the Service Procedure.

ISSUE
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.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

NOTE
BE SURE TO CHECK FOR DTCs IN ALL OTHER MODULES.

NOTE
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.

1. 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.

2. 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.





OTHER APPLICABLE ARTICLES: 07-21-12

WARRANTY STATUS: 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.

OPERATION DESCRIPTION TIME

080417A 2005-2006 Mustang: 0.9 Hr.
Replace The Fuel Level
Sender, Includes Time To
Release Fuel System
Pressure, Remove Back
Seat Bottom, Drain Fuel
(Do Not Use With 9275A)

MT080417 Use SLTS Operations If Actual
Available; Claim Additional Time
Diagnosis Or Labor
Performed As Actual Time

DEALER CODING
CONDITION
BASIC PART NO. CODE
9A299 28





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