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Discussion Starter #1
I just started driving an e34 525i with an automatic, it shudder while in overdrive and under light acceleration ....... Of I mash the gas it seems fine .... Till it goes back into overdrive

Also sometimes it doesn't want to drop into overdrive

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There's a product from Lubegard called Dr. Tranny's Instant Shudder Fix. I'm not normally a fan of aftermarket additives, but this stuff did wonders for the torque converter clutch chatter in my 540i's transmission. It's loaded with friction modifiers and may help your torque converter clutch engage more smoothly.
 

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Discussion Starter #6
I figured out the trans problem......I did a tune up and the shutter instantly left

I knew it had a miss, apparently it was missing at the overdrive rpm

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Discussion Starter #7
Ok so the car is is now in what I think is limp mode, the rev limiter has dropped to 4,000 rpm and has no ass.....any idea, has anyone run into this before.....need help

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