Hello .. thanks for the donation .. much appreciated
PO302 is a misfire on cylinder #2 ... it is possible this is because #2 plug is worn .. but more likely due to the PCM software needing to be updated ..as with all computer software updates are required periodically .. I am including the TSB
FLASH: MIL ILLUMINATION DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301, P0302, P0303, P0304, P0305, P0306
TECHNICAL SERVICE BULLETIN
Reference Number(s): 18-018-04, Date of Issue: April 27 2004
Related Ref Number(s): 18-018-04
NOTE:THE SOFTWARE IS AVAILABLE ON TechCONNECT. FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE SOFTWARE AND REPROGRAMMING INSTRUCTIONS WILL BE AVAILABLE ON ITIL/ISIS CD/DVD JUNE, 2004.
Flash: MIL Illumination Diagnostic Trouble Codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305, P0306
This bulletin involves replacing the spark plugs, ignition wires and if necessary, reprogramming the Powertrain Control Module with new software.
2004 - 2005 (RG) Chrysler Voyager
2004 - 2005 (RS) Town & Country/Caravan
NOTE:This bulletin applies to vehicles equipped with a 3.3L engine (sales code EGA or EGM) or 3.8L engine (sales code EGH), built on or before April 2, 2004 (MDH 0402XX).
The vehicle operator may experience a MIL illumination. Further diagnosis may determine that the MIL was caused by one or more of the following DTC's:
P0300-MULTIPLE CYLINDER MISFIRE
P0302-CYLINDER #2 MISFIRE
P0303-CYLINDER #3 MISFIRE
P0304-CYLINDER #4 MISFIRE
P0305-CYLINDER #5 MISFIRE
P0306-CYLINDER #6 MISFIRE
Using a Scan Tool (DRBIII(R)) with TechCONNECT and the appropriate Diagnostic Procedures, verify all engine systems are functioning as designed. If DTCs are present, other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or experiences the Symptom/Condition, perform Repair Procedure 1 and if necessary, Repair Procedure 2.
If an "Authorized Modification Label" is present and states that Service Bulletin 18-016-04 has been performed, it is not necessary to perform Repair Procedure 2.
6SPRE14PLP5Spark Plug (04686742AD)
104686710AACable/lgnition (Cylinder #1)
104686734AACable/lgnition (Cylinder #2)
104686737AACable/lgnition (Cylinder #3)
104686738AACable/lgnition (Cylinder #4)
104686740AACable/lgnition (Cylinder #5)
104686741AACable/lgnition (Cylinder#6) AR (1)
AR (1)04275086ABLabel, Authorized Modification
AR (1)05011058AALabel, Authorized Software Update (Markets Outside the United States and Canada)
SPECIAL TOOLS/EQUIPMENT REQUIRED
NPN Battery Charger
CH2002 General Purpose Interface Bus Cable Assembly
CH6000A Scan Tool (DRBIII(R))
CH7000A/7001A J1962 Cable with Red DRBIII(R)
NOTE:An updated J1962 cable has been released. This cable has a red colored connector at the DRBIII(R) connection. Use this cable whenever a flash is being preformed.
REPAIR PROCEDURE 1
Replace spark plugs and ignition cables
Replace the spark plugs and ignition (spark plug) cables. Refer to the service information available in TechCONNECT or the Town & Country and Caravan service manual (publication no. 81-370-04062CD), page 81-10.
If Service Bulletin 18-016-04 has not been performed, proceed to Repair Procedure 2. If Service Bulletin 18-016-04 has been performed, no further action is necessary.
REPAIR PROCEDURE 2
Flash Reprogram PCM
NOTE:Whenever a controller is programmed, the software in the DRBIII(R) must be programmed with the latest revision level available.
NOTE:If this flash process is interrupted/aborted, the flash should be restarted and then follow the directions on the DRBIII(R).
Before beginning the reprogramming procedure, remove any old flash reprogramming files from the DRBIII(R) memory. To clear the memory from the MAIN MENU:
Simultaneously press the "MORE" and "YES" keys.
A screen will appear requesting a "COLD BOOT".
Follow the on screen instructions by selecting the "F4" key.
When the DRBIII(R) reboots to the MAIN MENU, proceed to Step #2
With the ignition switch in the "RUN" position, determine the original part number of the PCM currently in the vehicle. Using the DRBIII(R) select:
"1998 - 2004 Diagnostics"
"All (Except Below)"
Record the "PCM part #" on the repair order for later reference.
Connect the DRBIII(R) to TechCONNECT. Open TechTOOLS and verify that the "DRBIII(R) Status: Connected" message is in the upper right corner of the TechTOOLS screen.
Enter the "PCM part #" recorded in Step #2 in the "Parts Criteria" area and select "Show Updates". TechTOOLS will populate the appropriate calibration.
Select the calibration.
Select the "DRBIII" radio button which is next to the "Download/Update" button.
Select the "Download/Update" button.
Monitor the "Flash Download/Update Progress" window on the TechCONNECT and follow the instructions on TechCONNECT. When the flash process is complete, proceed to Step #9.
Disconnect the DRBIII(R) from TechCONNECT.
Open the hood, install a battery charger and verify battery state is above 12.5 volts.
Connect the DRBIII(R) to the vehicle.
Download the flash from the DRBIII(R) to the vehicle. Using the DRBIII(R) select:
Follow the directions on the DRBIII(R) screen. When the flash process is complete, proceed to Step #13.
NOTE:Due to the PCM programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, SKIM, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. Check all modules using "Module Scan", record the DTC's, and erase these DTC's prior to returning the vehicle to the customer. Erase any DTC's in the PCM only after all other modules have had their DTC's erased.
NOTE:The following step is required by law.
Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach near the VECI label
Reimbursable within the provisions of the warranty.
You need to check oil levels under the same condition's each time you check, hot/cold oil will give different level reading's ...
Hope this helps .. let me know
Wednesday, May 27th, 2009 AT 3:32 AM