Tranny might be going... - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 08-04-2004, 07:50 PM
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So I was at the soccer game in Philly the other night, my dad was there. I drank and my mom didn't want me driving home. So my dad starts driving and he's like "Damn, what happened to your transmission? It seems like its slipping real bad. You aren't getting all the power you should be..."

So I'm a little worried. It makes sense that he would notice a difference because this is the first time he has driven the car in a couple months, so it wouldn't be familiar to him.

My question is, what the hell is does a slipping tranny sound like? That could explain the weird rattle I have been hearing forever (if you have seen my older posts from like a couple months ago, you know that I mentioned it). I looked under the car all over for the rattle and I deducted that it sounded like it was coming from the tranny...


Guess I need to have it looked at...?

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#2 (permalink) Old 08-04-2004, 08:04 PM
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Ok.. first where is the noise coming from?????... closer to each wheel... or from directly underneath you... or what?

And does the clutch feel like it engauging with a bite in it.. or gradually...?


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#3 (permalink) Old 08-05-2004, 02:28 AM
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i dont think trannys slip, the clutch does though. most kids in thier first standards really screw clutches up. its probly the clutch dude. i doubt you race hard enough to screw the tranny up.
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#4 (permalink) Old 08-05-2004, 03:11 PM
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5 speed tranny's dont slip. the grind, they rattle, and they vibrate when they are going bad but they dont slip. clutches slip. Unfortunately, BMW uses a damped tach so you cant really see the engine's small reaction, but if you take your car to anyone with some experience driving a manual they will tell you in 15 seconds if your clutch is slipping. Or try this: get the car going in first get it up to about 4000 RPM... then slightly back off the throttle for a second then floor it... watch the tach.. if the tach spikes above 4000 RPM and then comes back down slowly your clutch is slipping. This hard to describe but easy to do if you know what you are looking for
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#5 (permalink) Old 08-06-2004, 04:49 PM
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The noise is not coming from the wheels. I can pretty much tell it is coming right from the middle of the car. I checked for loose heat sheilds, exhaust brackets, bolts, etc. It sounds like it is directly coming from the tranny. The clutch definitely doesn't seem to bite and it is definitely more gradual. This is my first manual car, but I definitely haven't beaten the hell out of it, IMHO anyway...maybe that rattle is a couple broken clutch teeth rattling around...I am gonna get it checked out and see what the pros say...NYC, I will try the tach thing, it does make sense for me...thanks a lot for the info and ideas...

1996 318i
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Alpine CDA-7895 Head Unit
12" Alpine Type-R, sealed box
Pioneer 400w amp for $20 at a yard sale (to replace my fried MRV-1507)
Infinity Kappa 4" 2-way speakers(rear)
Infinity Kappa 5.25" component speakers(front)
Debaffled airbox, K&N filter
Tracked Mud on carpets
Shampooed and cleaned carpets
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