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1994 Cadillac Fleetwood Question: What causes shudder at torque converter lockup

 

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mekimmcar, Alamo, TX, February 14, 2013, 14:03
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about 45 to 50 miles per hour

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  • Answer #1

    pushrod February 14, 2013, 15:24
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    Torque converter itself or engine misfire(s) that's more pronounced with converter locked. Light on?

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    mekimmcar, February 14, 2013, 15:30
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    No CEL after fully warm 30 min any heavy gas pedal and its there add on occasional not

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    pushrod, February 14, 2013, 15:39
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    GOOD tune up should do the trick!

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    mekimmcar, February 14, 2013, 15:44
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    New plugs & wires. it has slight hickup idling in gear at stop light and car tries to move with miss at times but goes smooth when put in neutral

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    pushrod, February 15, 2013, 06:32
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    When the car gets into the highest gear (converter locked) ANY engine misfire is amplfied and just might feel like a shudder.
    Probably not felt in any lower gear. Scanner needed!!

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  • Answer #2

    ziptie12 February 14, 2013, 18:05
     Master

    If it's only when 'lock-up' occurs , try doing a trans fluid chang, using factory fluid. (NOT a flush) see if that helps the symptom.

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