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  1. #1 Lost 4th gear-lots of questions 
    SE Level Member green97's Avatar
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    Alright I just got my new used motor swapped into my car last weekend. Over the last few days have been taking a few 20 to 30 mile drives to town and back figuring out and fixing issues. On one of the trips I heards a whirring whiny noise that sounded like it was in the trans. Nothing unusual was noticed other than the noise for a few seconds. After another trip on the interstate I realized my rpms were up to 3500 at 80. Tried shifting between 3rd and D and nothing happens. Also made a youtube.

    https://youtu.be/3JtdSBSogX8

    After hours of searching and reading I found following threads most helpful and encouraging however many pictures don't work thanks to photobucket...

    http://www.grandprixforums.net/threa...in-the-Vehicle
    http://www.grandprixforums.net/threads/54448-How-to-transmission-4th-gear-side-cover-access?highlight=gear


    • Anybody agree that my most likely issue is the shaft splines stripped?

    I am going to call triple edge performance and order some parts on monday and maybe ask him a few questions. I am planning to install a hardened splined shaft and the PCS and TCC solenoids.
    • What are the reasons to replace the PCS and TCC solenoids during this gear hub change?
    • Do I need to buy the 3 thrust washers mentioned in 02NavyBlue's thread?
    • Can I drive this car like this until I replace the hub (less than say 3000 rpm) or will it do more damage?
    • If I change the shaft should I be concerned about metal shavings in the trans from the splines shaving off or does the filter catch them?
    • Anything else I should do while I have the cover off?
    • Why don't I have any trouble lights on? Does this problem throw a code? I had a scanner and wasn't seeing anything.
    • Is there anything else I should do to double check that the shaft is the problem?
    Last edited by green97; 07-08-2017 at 03:50 PM.
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