Hi all, I would like to help by adding on to the topic and hopefully it helps someone out there.
My car 2008 Subaru Legacy SI Cruise imported from Japan recently to New Zealand. The car drove well for a few months but then one day after pulling away I felt a hesitation and BANG, 1st of many jerks and head scratching. At the time I would say it was bearable as the jerking/banging would happen about once a day. My work is 15kms away and daily after driving for exactly 9 minutes I would feel a slight hesitation and then the ATF temp, ABS and VDC would light up and then there would be no gear changes unless I restarted the vehicle. The 9 minutes changed after about a month and became random. Code came up P1710. Got a quote for a sensor in New Zealand for $240 but bought one on Ebay $80 including freight and it only took a week to arrive. 3 Wires, what could go wrong lol.
Dropped sump and valve body. The new sensor had Red, Green and Blue wires, the valve body was Red, Black and Purple. The crowd in NZ said it didnt matter how the wires were connected as long as Red was Red hmmm. I decided to solder them as they exited the unit so Red-Red, Black-Green and Blue-Purple. Put everything together and now it was Bang, Bang, Bang all the time. Would get to 65kph and on with the 3 lights, the banging was worse than before and really bad as it would happen in every gear change until 65 then get stuck in 4th. Trying to pull away at the lights in 4th was testy.
Decided to drop the sump again and swap the 2 wires so Blue to Black, Green to Purple, this fixed the problem. The bad news is that after driving too long in BANGING MODE it had caused some damage as after dropping the sump the 2nd time I found 2 metal pieces which looks like the bottom of a gear tooth and the new oil was pretty shagged as it would be with all the slipping. Driving the car now is awesome but there is a slight hesitation changing from 3rd to 4th which I am not sure if it's always been. Will use car for a month then change the oil and update the post.
Hope this post helps someone.
