Durango 2WD V8-5.9L VIN Z LDC (2000)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Performance - Enhancements
NUMBER: 18-001-01
GROUP: Vehicle Performance
DATE: Jan. 26, 2001
THIS BULLETIN SUPERCEDES TECHNICAL SERVICE BULLETIN 18-023-00 REV. A, DATED DEC. 21, 2000, WHICH SHOULD BE
REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS**. THIS LATEST REVISION NOW INCLUDES
THE WJ - CALIF. EMISSION PACKAGE.
SUBJECT:
4.7L Engine Performance Enhancements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration level 99Cal20 and
00Cal17)
MODELS:
2000
(AN)
Dakota
2000
(DN)
Durango
1999 - 2000
(WJ)
Grand Cherokee
NOTE:
**THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE.**
SYMPTOM/CONDITION:
Some vehicle engines may exhibit several of the following engine performance conditions:
1.
Part throttle or wide open throttle spark knock.
2.
**Sag or hesitation following a cold engine start (except WJ with Calif. emissions).**
3.
Rough idle.
4.
Idle sag when decelerating to a stop.
DIAGNOSIS PROCEDURES:
1.
If the customer experiences any of the above conditions, then perform the Repair Procedure.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
NOTE:
THE MDS2 AND DRB III(R) ARE REQUIRED TO PERFORM PART OF THIS REPAIR. WHEN USING THE MDS2 AND THE DRB III(R),
THE SYSTEM MUST BE OPERATING AT CIS CD 2076 OR HIGHER.
