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Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Volvo
Satisfied Customers: 47706
Experience:  16 years of experience
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I'm working on a 2003 Volvo XC70 AWD and it has an AW55-51SN

Customer Question

I'm working on a 2003 Volvo XC70 AWD and it has an AW55-51SN automatic transmission. The original transaxle assembly failed and I replaced it with a good used unit with 126K miles. Everything works great except there's a double shift when shifting from 2nd to 3rd a kind of bump-bump. I understand this trans has issues with the valve body but before I run out and replace it I would rather see if you guys can help me. I can't find any repair information on this trans whether it be manuals or the internet.
Submitted: 9 months ago.
Category: Volvo
Expert:  Chris (aka-Moose) replied 9 months ago.

Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.

  • Sorry no one has helped yet.
  • This is not an answer to your question, just an inquiry if your still needing/wanting help. Because I believe I can help.
  • I am travelling and on vacation this week but will do my best to get to you when online.
Customer: replied 9 months ago.
I still need help, thanks.
Expert:  Chris (aka-Moose) replied 9 months ago.

I too agree this is most likely the valve body causing this concern. I do have all the repair guides and diagnostic guides. Are there any steps or files you need?

Customer: replied 9 months ago.
I have no information on this transmission. I have DIY Mitchelle online e-auto repair manuals but Mitchelle said Volvo has not released any info on this transmission. I went and purchased a $600.00 valve body and installed it (which was a miserable job in itself) and now I got a hash Park to Drive engagement, a shudder when going into 5th gear, and still the double bump-bump going into 3rd. This double bump-bump feels like 2nd gear is not releasing soon enough before 3rd gear engages, so I get one bump when 2nd releases and a second bump (normal shift) when 3rd engages. Please tell me how to adjust the 3rd gear band, there is no adjusting screw just what looks like disc's inside the servo. How do you adjust the 3rd gear band???
Expert:  Chris (aka-Moose) replied 9 months ago.

I do not believe I am the best tech for you. I am not good at explaining how to do transmission repairs on this model I am going to remove myself from the conversation and opt out making way for someone else to help.

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