(hopefully this is in the right place) I searched for someone who had this specific surging issue. While I found a few examples of folks with this behavior, I never found a definitive “this is what it was and this is how we fixed it.” I hope this helps one of those people ... Short version: The auto...

Bom Dia, Pedro!

I think the diesel transmission gear ratios And final drive will be different from your car, I’m not sure if that will work

1st, a 2003 with only 55000 km looks very suspicious. Count rather be more like 200000km + Agree about the ratios on diesel May give it a try with one from a gasoline engine. Don't know about the compatibility but here's a topic that may give an idea https://www.volvoforums.org.uk/showthread.php?t=2...

This is just a guess, but maybe some connector on the valve body unit got loose. There is a wire loom going inside the valve body cover, the connections are inside so not easily accessible. If the unit was repaired in the past, not impossible one of the small connectors to be loose. I'm thinking thi...

Look for "doublebug" on Skype. Henry can read your car using your Dice without Vida install then email you the report. You just need to install Team Viewer to give him some access to install connecting drivers. Make sure you have transmission error before he reads it.

sorry, responding to different question.