08 tech here.

Transmission problems. Shifts fine until around 40mph the rpms shoot way up but car doesn't respond. I have drain/filled fluid 4 times with no difference. I bought 3rd and 4th gear pressure switches, but cannot find where the 4th gear is at, anyone know where it is located? thinking I have to get to it from the topside removing the air box etc.

Only got the flashing D once but for months it has been acting this way and it is always not intermittent.

 

https://acurazine.com/forums/1g-rdx-...-p0848-949335/

Check that thread, has the info you need with diagram.

 

Also take a look at dcmodels thread:
https://acurazine.com/forums/1g-rdx-...cement-919364/

 

perfect thanks guys. not sure why it is so tough searching for rdx specifically related stuff everything populates with tl or mdx guess google does not like rdx.

 

need to know part numbers for the 2nd 3rd and 4th sensors as the two i have done were 3rd and 4th with zero change. I want to do 2nd now and replace the two i got from amazon which are not oem swap to oem as I should had known better.

Same problem where the rpms redline once approaching 2k if i play with throttle i can get it to act normal once it happens.