Concorde V6-2.7L VIN R (1998)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - No Engine Restart/Rough Idle After a Hot Soak.
NO: 18-09-98 Rev. A
GROUP: Vehicle Performance
DATE: Mar. 13, 1998
SUBJECT:
No Restart/Rough idle After A Hot Soak
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-09-98, DATED FEB. 27, 1998, WHICH SHOULD BE REMOVED FROM
YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE THE ADDITION OF THE 2.7L ENGINE.
MODELS:
1998 (LH) Concorde/Intrepid
SYMPTOM/CONDITION:
Some vehicles may exhibit a hot engine no start, hot engine restart with a rough idle, or hot engine restart/die-out. Some vehicles may also exhibit misfire
DTC's. This condition occurs after a 10 to 20 minute hot soak and may be aggravated by alcohol blended fuels. Some vehicle may not restart until the
engine cools. Fuel vapor build-up in the fuel rail may be the cause of these conditions.
DIAGNOSIS:
**Using the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning
as designed**. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with
this bulletin. Cold soak the vehicle outdoors or in the shop for a minimum of 8 hours. Connect as fuel pressure gauge Miller Tool C4799 to the service
port on the 3.2L. **On 2.7L engines, use Miller Tool C4799 plus adapter 6539. Perform fuel bleed procedures and disconnect the quick connect fuel
line at the rear of the engine, just below the throttle body. Connect the adapter 6539 to the fuel line and the pressure gauge C4799 to the adapter.**
Switch the ignition key to the "run" while monitoring fuel pressure. **Do not start the vehicle.** **Allow the fuel pressure to stabilize (approximately
48 to 50 psi) and switch the ignition key to "off".** Monitor the fuel pressure gauge for 15 minutes. If the fuel pressure drops 20 PSI or more, the fuel
pump module will require replacement along with the flash update Repair Procedure. If the fuel pressure drops less than 20 PSI, perform the flash update
Repair Procedure only.
NOTE:
WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE
REPLACEMENT CONTROLLER SHOULD BE VERIFIED FOR THE LATEST REVISION LEVEL USE THE LASH PROCEDURE TO
UPDATE REPLACED CONTROLLERS AS NECESSARY.
EQUIPMENT / PARTS REQUIRED:
1
CH6000
Scan Tool (DRB III )
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
CH7000 / 7001
J1962 Cable
1
04669020
Label - Authorized Software Update
1
04275086
Label - Authorized Modification
AR(1)
5003958AA
Module, Fuel Pump
1
C4799
Fuel Gauge, Miller
1
6539
Gauge Adapter, Miller (For 2.7L Engine)
NOTE:
THE MDS AND DRB III ARE REQUIRED TO PERFORM THIS REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 21
OR HIGHER AND TIL CD RELEASE **1153** OR HIGHER MUST BE INSTALLED.
REPAIR PROCEDURE:
This bulletin involves replacing the fuel pump module if required (per the diagnosis section) and/or selectively erasing and reprogramming the
Powertrain Control Module (PCM) with new software (calibration changes).
NOTE:
THE FLASH PORTION OF THIS BULLETIN APPLIES TO VEHICLES WITH 3.2L ENGINES BUILT PRIOR TO FEB. 16, 1998 MDH
(0216XX) AND 2.7L ENGINES BUILT PRIOR TO MAR. 9, 1998 MDH (0309XX).**
1.
If necessary, follow the procedures listed in the, service manual publication number 81-270-8140 to replace the fuel pump module. Follow the
reflash procedures after fuel pump module replacement. If fuel pump module replacement is not required, perform the following reflash procedure
only.
