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Discussion Starter · #1 ·
158k on an '06 Caravan, big 6....... . When shifting from 1st to 2nd with a bit of throttle, it sort of clunks in. the more acceleration the more the clunk, also when turning it seems to clunk a bit more as well. The higher the Rs the more disturbing the clunk. If you're ultra easy on the peddle at lower Rs, it hardly clunks. Is it worn gears, differential, loose something or other or what?
 

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Virginia Gentleman
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Has the transmission ever been serviced? Has the fluid level been checked? Have you checked for any fault codes? I'd start by checking the fluid level. Then check for codes - this may require a shop visit. Standard scanners may not show the transmission fault codes. If no codes, it sounds like a hardware failure. Further diagnosis by a reputable shop may be needed.

You could try dropping the pan and changing the fluid and filter. If you find metal chunks in the pan, it probably indicates a hardware issue. Metal fuzz on the magnet is normal. Be sure to use ATF+4 fluid.
 

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1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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21,818 Posts
If the fluid and filter are recent and in good shape, there is also a flash update in TSB # 21-018-07A that addresses harsh 1-2 and 2-3 upshifts:

NUMBER: 21-018-07 REV. A
GROUP: Transmission
DATE: December 12, 2007
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-018-07, DATED OCTOBER 27, 2007, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES ADDITIONAL SOFTWARE FOR THE EARLY BUILD 2005 MODELS.
THE DRBIII(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE ON DealerCONNECT.
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL ALSO BE AVAILABLE ON ITIL/ISIS DVD JANUARY, 2008.
SUBJECT:
Flash: 1 - 2 and/or 2 - 3 Shift Harshness
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software and performing the Quicklearn procedure with the DRBIII(R).
MODELS:
2005 - 2006 (RG) Chrysler Voyager (International Markets)2005 - 2006 (RS) Town & Country/Voyager/Caravan
NOTE :**This bulletin applies to models equipped with a 3.3L or 3.8L engine (sales code EGA, EGM or EGH)**.
SYMPTOM/CONDITION:
Some customers may experience 1 - 2 and/or 2 - 3 shift harshness.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) and appropriate Diagnostic Procedures available in DealerCONNECT > TechCONNECT, verify all transmission systems are functioning as designed.
If the vehicle operator describes the Symptom/Conditions and / or they can be verified, perform the Repair Procedure.
 
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7 Posts
Discussion Starter · #4 ·
Has the transmission ever been serviced? Has the fluid level been checked? Have you checked for any fault codes? I'd start by checking the fluid level. Then check for codes - this may require a shop visit. Standard scanners may not show the transmission fault codes. If no codes, it sounds like a hardware failure. Further diagnosis by a reputable shop may be needed.

You could try dropping the pan and changing the fluid and filter. If you find metal chunks in the pan, it probably indicates a hardware issue. Metal fuzz on the magnet is normal. Be sure to use ATF+4 fluid.
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fluid's just been replaced, looked OK.. no codes at this time. Is this typical for an aging tranny?
If the fluid and filter are recent and in good shape, there is also a flash update in TSB # 21-018-07A that addresses harsh 1-2 and 2-3 upshifts:

NUMBER: 21-018-07 REV. A
GROUP: Transmission
DATE: December 12, 2007
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-018-07, DATED OCTOBER 27, 2007, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES ADDITIONAL SOFTWARE FOR THE EARLY BUILD 2005 MODELS.
THE DRBIII(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE ON DealerCONNECT.
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL ALSO BE AVAILABLE ON ITIL/ISIS DVD JANUARY, 2008.
SUBJECT:
Flash: 1 - 2 and/or 2 - 3 Shift Harshness
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software and performing the Quicklearn procedure with the DRBIII(R).
MODELS:
2005 - 2006 (RG) Chrysler Voyager (International Markets)2005 - 2006 (RS) Town & Country/Voyager/Caravan
NOTE :**This bulletin applies to models equipped with a 3.3L or 3.8L engine (sales code EGA, EGM or EGH)**.
SYMPTOM/CONDITION:
Some customers may experience 1 - 2 and/or 2 - 3 shift harshness.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) and appropriate Diagnostic Procedures available in DealerCONNECT > TechCONNECT, verify all transmission systems are functioning as designed.
If the vehicle operator describes the Symptom/Conditions and / or they can be verified, perform the Repair Procedure.
------------------------
Thank you ..... I'm not showing any of the codes mentioned but would you recommend taking this to a reliable tranny shop or a Chrysler dealer first? It DOES sounds like it applies.
 

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Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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21,818 Posts
No fault codes are mentioned in the TSB in order to qualify for the repair, only the presence of harsh upshifts.
A Chrysler dealer is authorized to update the PCM/TCM to the latest software release, if it hasn't been done already.
This software update would be the next logical step in 'harsh-shifting' diagnosis.
 
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