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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 02-24-2014, 06:11 PM   #1
325ci_c150
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Help!!!! Clutch pedal rock hard

Help so literally like 5 minutes ago, I was suspecting that my clutch was slipping a little, and I read that while going down the highway throw it into first then rev it with the clutch still in then throw it into first and see if the rim drops. Which now I think was really really dumb once I threw it into first I heard a loud bang and the clutch pedal went rock hard and now I'm stuck on the side of the road. It still goes into all the gears easily sitting here. And on top of that I thought my be I could drive it without the clutch if it was that so I tried to start it by pushing 5 he clutch down the clutch pedal snapped to add insult to injury. So did I blow up my tranny or is it a bad clutch.......
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Old 02-24-2014, 06:12 PM   #2
325ci_c150
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First then into fifth*
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Old 02-24-2014, 06:43 PM   #3
emgee
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Old 02-27-2014, 03:16 AM   #4
wanganstyle
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Halp.

I think you should post this on r3vtard as they probably have most experience with shifting to first gear while at freeway speed.

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Old 02-27-2014, 06:23 PM   #5
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When you can shift it into gears just sitting there, is that with the engine running or off? Throwing it into first at highway speeds is a recipe for grenading your engine... Whoever said to do that was trolling you or really dumb. You can check clutch slip at highway speeds by hitting the clutch, revving up the engine, and then dumping the clutch while hitting the gas all while still in 5th (or 6th) gear. There's no reason whatsoever to go into first at any point of this process...

The clutch pedal being rock hard makes my first suspect a broken clutch. If it was a non-dual mass flywheel I'd think a spring broke out of the clutch disc and jammed between the disc and flywheel or pressure plate. With the dual mass setup like we have stock I dunno what would have broken there. Otherwise maybe trying to jam it into first at way too high of a speed blew up the synchro or damaged a shifter fork and the transmission itself is borked. It feels like it's going into gear, but it's actually jammed into having two gears engaged at once essentially. That wouldn't explain the hard clutch pedal though. Whatever it is, I doubt it's gonna be cheap or easy to fix.
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Old 02-27-2014, 08:26 PM   #6
badfast
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Quote:
Originally Posted by Tangent_ View Post
When you can shift it into gears just sitting there, is that with the engine running or off? Throwing it into first at highway speeds is a recipe for grenading your engine... Whoever said to do that was trolling you or really dumb. You can check clutch slip at highway speeds by hitting the clutch, revving up the engine, and then dumping the clutch while hitting the gas all while still in 5th (or 6th) gear. There's no reason whatsoever to go into first at any point of this process...

The clutch pedal being rock hard makes my first suspect a broken clutch. If it was a non-dual mass flywheel I'd think a spring broke out of the clutch disc and jammed between the disc and flywheel or pressure plate. With the dual mass setup like we have stock I dunno what would have broken there. Otherwise maybe trying to jam it into first at way too high of a speed blew up the synchro or damaged a shifter fork and the transmission itself is borked. It feels like it's going into gear, but it's actually jammed into having two gears engaged at once essentially. That wouldn't explain the hard clutch pedal though. Whatever it is, I doubt it's gonna be cheap or easy to fix.
Pretty much this. You won't be able to tell the extent of damage until the transmission is pulled.
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Old 02-27-2014, 09:58 PM   #7
Bavaryan
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Fifth to first on the highway? Best case blown clutch, second best case blown transmission, third best case blown engine. Worst case you grenaded all three.

You followed some very bad advice and now it is time to pony up some $$$$$ or buy another car.

Good luck, I hope I'm wrong.....


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Old 03-05-2014, 04:53 PM   #8
dardarwin01
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Did you really push it into first, at that high speed updates op


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Old 03-11-2014, 07:29 PM   #9
Landlorder
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He would have over revved his engine if he was over 40mph easily - I went from 6th to 2nd at 80mph when I first got my car and bent loads of valves !
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Old 03-13-2014, 03:58 PM   #10
JDUTHIE
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YOU REALLY HAVE TO "push" IT INTO 1ST AT HIGHWAY SPEEDS AHAHAHA WOW HOLY FAIL THREAD. OP IF IT STILL GOES INTO GEAR, ID CHECK OUT THE FORK, OR SLAVE. BUT WHILE YOUR IN THERE AHAHAH BUY A NEW CLUTCH AND PRAY?
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Old 03-14-2014, 02:01 AM   #11
dardarwin01
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I think that's still unbelievable, it's common sense you downshift 1 gear or 2 at a time with low rpm or three if you really wanna slow down/ stop quicker. 4 or 5 gears is doing to much. If you need advice ask on this thread. If you really need to test your clutch, you need to be at a full stop. be in say seconded and or third gear and rev the engine let go off the clutch and than if your car dies it's a bad clutch. Slippage will occur In high gears.


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