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    lightbulbs1's Avatar
    lightbulbs1 Posts: 32, Reputation: 1
    Junior Member
    		  
    #1

    Apr 27, 2009, 08:39 PM
    Car shifting rough
    When my car shifts into 2nd gear (automatic transaxle) it gives the car a big jerk.Is this serious?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Apr 27, 2009, 08:46 PM

    Here's what I would do:

    . Drop and clean the transmission pan, change the filter, and refill with Mobil 1 Synthetic ATF. Repeat this process every 30,000 miles.

    . Disconnect the negative battery cable overnight, to force the PCM to relearn shift points.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #3

    Apr 28, 2009, 06:29 AM

    https://www.askmehelpdesk.com/cars-t...le-303903.html

    Check for vacuum leaks to the transmission's modulator valve, if equipped.
    You may have a worn/broken motor mount(s) as well.
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