Engine - Stumble During Throttle Tip-In
88ford08Article No. 88-7-15
STUMBLE - AFTER HOT SOAK DURING SLIGHT "TIP-IN" - 5.0L H.0. WITH AOD TRANSMISSION
FORD: 1988 MUSTANG
CALIBRATION: 8-22P-R10 (California Only)
WARNING: This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and could create liability under applicable federal or local laws.
ISSUE: A light to moderate stumble during throttle "tip-in" may be caused by an over-rich fuel condition. The stumble occurs during the first 30 seconds after a hot soak restart. This over-rich fuel condition may be caused by the strategy of the EEC IV processor.
ACTION: To correct this, install a new level EEC IV processor. Refer to the 1988 Engine/Emission Diagnosis Shop Manual, Volume "H" for service details.
Obtain an Authorized Modification Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modification Decal. Clean the area, install the decal and cover it with a clear plastic decal shield.
PART NUMBER PART NAME CLASS
E8ZZ-12A650-GC EEC IV Processor W
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION: 880715A - Includes EEC IV Quick Test
TIME: 1.2 Hrs.
DLR. CODING: Basic Part No. DRIVE
Condition Code: H8