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2003 XK8, 74,000 miles: When slowing to a stop the transmission…

2003 XK8, 74,000 miles: When...
2003 XK8, 74,000 miles: When slowing to a stop the transmission klunks hard when downshifting into first. If you don't stop completely, it will downshift hard into first with a jerk on acceleration. My local Jaguar dealerhas performed a reprogram on the TCM twice in four months, but I still have the same problem. The dealer does no know what elese to do. Can you tell me what else will cause this problem and who I should see for repairs? Thsnks, Larry
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Answered in 34 minutes by:
11/6/2012
Jaguar Mechanic: Richard, Jaguar Technician replied 9 years ago
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,762
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
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Hello and welcome to justanswer.com

Can I have the last six digits of your VIN?
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Customer reply replied 9 years ago


Hi,


VIN...A31150

Jaguar Mechanic: Richard, Jaguar Technician replied 9 years ago
Ok thanks.

Since the TCM adaptations were cleared and the module reprogrammed this usually resolves the shifting issues. However since the problem does return it is most likely a problem with the actual TCM/valve body assembly which will need to be replaced. When replacing the unit it does have to be programmed so a dealer will have to do that unless you can find a qualified European shop that has dealer level equipment. Sorry for the bad news.
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,762
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
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Customer reply replied 9 years ago


Thanks for the help. Don't know why my service dept. could not tell me this. Luckily I have an extended warranty that covers the powertrain, including trans. internal parts.

Jaguar Mechanic: Richard, Jaguar Technician replied 9 years ago
Well that's good news as your extended warranty should cover it. Keep me posted.
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