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Transmission T6

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
tank1331
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tank1331

Transmission T6

Post by tank1331 » Tue Jan 07, 2020 10:12 am

I am hoping someone here can help me diagnose a problem with my XC90 T6. I jsut pruchased the vehicle with 140k (miles) on it. The vehicle slips or "studdors" when in drive but only at take off. When i use the manual mode and shift myself it has no problem. I know these transmissions are junk but it doesn't make sense to me that the transmission is bad when it works in manual and not in drive. Any help or explanation would be hugely appreciated.

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RickHaleParker
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Re: Transmission T6

Post by RickHaleParker » Tue Jan 07, 2020 12:39 pm

I got the same truck. When I first got it the shifting was all over the map, I had to manual shift it all the way home. Replaced the defective starter battery and a lot of errors cleared up, including the shifting. Check the battery condition, low voltages can cause all kinds of errors.

A Vida-DiCE clone would be a good investment. It will pay for itself in one avoided misdiagnosis .
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

tank1331
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tank1331

Re: Transmission T6

Post by tank1331 » Tue Jan 07, 2020 2:10 pm

Thank you that’s a much easier fix than what I was starting to think from everything I have read on line....I should mention it is a 2005 xc90 t6

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SuperHerman
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Re: Transmission T6

Post by SuperHerman » Tue Jan 07, 2020 2:26 pm

Two things - 1) RickHaleParker is right in that Volvos act very strange when power is low. First place to start.

2) The transmission is GM - so besides the Volvo power side it behaves like the transmission of a similar year Impala (to name one of many). So expand your reading to include other cars that share the same transmission.

Check your fluid level and condition - dip stick is near the strut tower - cylinder #6 on driver side. Should have a yellow pull end.

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