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Old 10-06-2018, 12:31 PM
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andrewwynn andrewwynn is offline
Join Date: Jun 2015
Location: Racine, WI
Posts: 6,161
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Sounds like the TC is locking/unlocking when the TC locks the rpm will drop and rpm will tie directly to the speed.

Look through your scanner for real-time data for gears, lockup or output speed you can confirm. You can also tell from speed/rpm.

When TC locks up you'll lose all acceleration and any throttle application should unlock with an immediate bump in RPM before any speed increase.

Why the TC would be switching in/out of lock without throttle sounds like your quest.

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E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
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