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      02-26-2024, 03:06 PM   #6
omgzirra_exe
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Drives: 4.4L M3, 1JZGTE IS300, N55B30
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Location: BMW, M3

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Quote:
Originally Posted by M3SQRD View Post
If you were at redline in 1st there could not be a large jump in rpm because there’s no lower gear (numerical higher gear) below 1st. So it could not have been something similar to a money shift to cause an over-rev condition. Any chance the engine stayed in 1st and abruptly bounced off the rev limiter before harshly selecting 2nd then 3rd OR it incorrectly selected 3rd, then did a large throttle blip to select 2nd and then suddenly shifted back to 3rd again?
I don't think the RPMs bounce off the limiter if you don't shift. In my experience, it tends to hold at maximum RPM until I shift. (DCT)

However, it could be that bad engine mounts are causing the shifts to be less crisp and smooth. The same could be said for the transmission and differential mounts. If the engine is moving around due to bad mounts, it could lead to the transmission behaving awkwardly.

so you can just jack the car up and see if the oil pan is sitting on the reinforcement plate. if it is, then your engine mounts went poof.
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