Help! Lol,
2007 base cooper, automatic 170k milesI was having scary hard shifts once the transmission was warm, like shudder and screech tires.
Research looked like solenoids in valve body could stick once warm with so many miles (like varnish in the pintle bearings)
original solenoids we're small and color coded plugsRock auto only had large body solenoids and all but one we're same color...
I Replaced the transmission solenoids, which went smooth...
Now all shifts are hard and 5th slips badly.
Is there a shift repair kit for the original small ones?
Maybe I should get new small ones? If so anyone know where?
Or is there some adjustments I should have made to valve body??


Size difference and I figured the channels were similar

 

From what I've read and recall (I did this job about a year ago) you need to match the solenoid sizes - you cannot interchange the sizes. Here's a link to a place that has the small can solenoids for your year and model car. There may be other suppliers that have them as well. https://www.wolfsburgtuning.com/auto...t-0000%201059m. There is also the chance that your valve body is in need of being replaced. I bought a re manufactured valve body that came with new solenoids and changed out the who thing. Trans has been running fine for over a year now.

 

Thanks! I'm going to order those and replace.

 

Try this link
https://www.wolfsburgtuning.com/

 

Those solenoids totally helped.
after resetting adaptation and new fluid, and a couple months of driving there still remains one issue.
When warm there is a hard shift to 4th and sometimes 5th.
Can you advise how to adjust the solenoids on those 2?
Maybe k1 and k2? Clockwise? How much?

 

Here is a link to an article that addresses how to adjust the solenoids, and what each one does. https://www.sonnax.com/tech_resource...n-fwd-6-speeds