2008 Prius will NOT move + Code P0A90 Drive Motor “A” Performance

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by PriuSocal, Apr 21, 2025.

Page 2 of 2
  1. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    11,774
    2,083
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    This is what you get when a dingbat is working and looking at something it's been a half an hour digging a screwdriver into three holes rather than showing the inside of the transmission bell housing and I'm doing the five or six 12 mm bolts and letting the plate fall off trying to see what's been slinging around in there and getting shredded it should be some silver or something somewhere that shows what helped to grind up the metal or aluminum should be in the bell housing edges or something and what's behind that plate when you dump it out.? I'm assuming this is what happens when you keep driving with the rattle going on into Oblivion you're not smart enough to turn the car off or what have you your mind won't allow it or something like that even our 2013 Prius persona which rattled itself until it threw a rod the torque plate sitting in the yard and perfect condition and I have the one off to JDM motor in the same condition sitting next to it and that engine threw a rod through the side of the block and was completely ruined everything else in the engine was in beautiful condition by looking at it camshafts everything else that rotated didn't even look like they had 190,000 miles on them.
     
    #21 Tombukt2, May 25, 2025 at 7:25 AM
  2. PriuSocal

    PriuSocal Member

    Joined:
    Mar 23, 2023
    125
    25
    0
    Location:
    SoCal
    Vehicle:
    2008 Prius
    Model:
    N/A
    I installed the charged battery and attempted to start the car again and it started doing the grinding noise again. I also tried to put it in gear and it jerked and did not move front or back, it just continued to make the grinding noise. You could tell it was coming from where the damper is as you could hear it rotating and rubbing against something. (SEE 1st VIDEO)

    https://youtube.com/shorts/LtU8LICpG08?si=oCCmn3e6EklS1GiG

    I also ran the codes and got a p0A90, P0335 and P0A80. I was not getting those last 2 codes prior to the 1st time the car got the problem and now it is giving them to me. I could NOT get the sub code with my scanner to see what 3 digit numbers are given for the P0A90-XXX in order to tell what may be the exact issue. I also saw that a fix would be to replace the crankshaft position sensor which I got one at the junk yard but nothing changed and still gives me the p0335 code after the replacement.

    At one point the grinding went away and the ICE was on and sounded very smooth like before except rpm sounded a little bit higher than normal like when you 1st start it up in the morning, once the rpm dropped it began to grind again and ICE shut off. (SEE 2nd Video)

    https://youtube.com/shorts/MVnDvpdg-kY?si=26_SJYvQ86FWfv-z

    I am leaning to just taking out the transmission and replacing the damper. I did use a borescope to see inside the bellhousing where the damper lives but could not see much as the plate is only thing i can see with the small space it allows for the borescope to go inside the bell housing.

    Additionally, I have attached the photos of the crankshaft position sensor I removed from the car VS the replacement I installed. Is the metal part supposed to turn counter/clock wise with you hand? Or is that suppose to be firm? Both rotate if I turn the metal part with my hand.

    20250525_145610.jpg
     
    #22 PriuSocal, May 25, 2025 at 9:16 PM
    Last edited: May 25, 2025 at 10:19 PM
(You must log in or sign up to post here.)
Page 2 of 2