06-04-2016, 02:26 AM | #1 |
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Clutch slipping or boost leak?
I have a 435i xdrive msport with fmic, catless dp, intake, and jb4.
Long story short, when I'm driving and I want to to get some more power by stepping down the clutch and let go. It just revs really high and stays there revving after letting go the clutch and car doesn't move...
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2013 M5 Space Gray, Piano Black|Night Vision|Every option|6MT|RW Carbon front Lip|Vorsteiner Rear Diffuser|
2019 x7 50i White, Loaded | chrome delete | black grill | Previous: 2015 X5 Graphite, |All options| - 2014 435i Xdrive Msport, |Fully Loaded|6MT|FBO|JB4|Front,side,rear lips/spoilers|- 2015 320i Xdrive, |Wife's beater| - 2008 535i Xdrive |
06-04-2016, 11:20 AM | #2 | |
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There are many other ways to test as well like starting in a higher gear and seeing if car catches or RPMs go up. Mike |
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06-05-2016, 01:31 AM | #3 |
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What is this clutch thing naiza3k speaks of?
Mike is right, give that a shot, If its slipping that bad, accelerate to about 15 miles an hour in first gear, maintain your speed and then punch it. Normally my car will just spin the tires but I have a feeling your revs will climb without the wheels spinning It's pretty obvious if the clutch is slipping. It will feel like you are spinning tires except you're not. |
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06-05-2016, 02:14 AM | #4 |
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Or you can throw it in 6th gear at 25-30 MPH and floor it. If revs climb and you don't pick up speed, your clutch is toast. If the car slowly starts accelerating it's probably something else
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06-09-2016, 01:32 PM | #6 |
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while driving to work today, I got the car to 25mph and put it in 6th gear and floored it. Car accelerated slowly so seems like the clutch is ok.
Does this mean I have a boost leak then?!?! |
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06-09-2016, 02:07 PM | #7 |
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06-09-2016, 03:35 PM | #8 | |
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So what do you think is the reason why I'm having this symptom? I don't feel like the car wants to have any wheel spins at all... and if i step on the clutch and rev up and let go, the car just stays reved and doesn't accelerate at all... |
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06-09-2016, 04:33 PM | #9 | |
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2013 335i Msport Black sapphire/Coral red. MHD. stage 2--e30 VRSF DP, ER CP, Dinan Shockware. VRSF 12mm/15mm spacers. Cobra dashcam. Various codings.
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06-10-2016, 01:35 AM | #10 |
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Won't a boost leak throw a code in a modern day BMW?
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06-10-2016, 01:49 AM | #11 |
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No idea...
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2013 M5 Space Gray, Piano Black|Night Vision|Every option|6MT|RW Carbon front Lip|Vorsteiner Rear Diffuser|
2019 x7 50i White, Loaded | chrome delete | black grill | Previous: 2015 X5 Graphite, |All options| - 2014 435i Xdrive Msport, |Fully Loaded|6MT|FBO|JB4|Front,side,rear lips/spoilers|- 2015 320i Xdrive, |Wife's beater| - 2008 535i Xdrive |
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06-10-2016, 10:50 AM | #12 |
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It might, but both times it happened I had a JB4 and never saw anything
(maybe auto cleared) or bothered to check because I knew right away what it was.
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2013 335i Msport Black sapphire/Coral red. MHD. stage 2--e30 VRSF DP, ER CP, Dinan Shockware. VRSF 12mm/15mm spacers. Cobra dashcam. Various codings.
Last car: 2011 335i Msport. JB4. Vrsf CP |
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06-15-2016, 06:28 PM | #13 | |
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Where was the leaking coming from? I'm still running the stock CP so that could be why. Also when I was installing the FMIC, i noticed there was a little bit of oil in the hoses... does this mean anything? normal? |
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06-15-2016, 10:52 PM | #14 | |
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2013 335i Msport Black sapphire/Coral red. MHD. stage 2--e30 VRSF DP, ER CP, Dinan Shockware. VRSF 12mm/15mm spacers. Cobra dashcam. Various codings.
Last car: 2011 335i Msport. JB4. Vrsf CP |
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06-16-2016, 12:25 AM | #15 | ||
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2013 M5 Space Gray, Piano Black|Night Vision|Every option|6MT|RW Carbon front Lip|Vorsteiner Rear Diffuser|
2019 x7 50i White, Loaded | chrome delete | black grill | Previous: 2015 X5 Graphite, |All options| - 2014 435i Xdrive Msport, |Fully Loaded|6MT|FBO|JB4|Front,side,rear lips/spoilers|- 2015 320i Xdrive, |Wife's beater| - 2008 535i Xdrive |
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06-16-2016, 10:21 AM | #16 |
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Similar as in RPM going up and no power....car not moving--no. Like I said it's like my 300hp+ car at 5000 RPM feeling like it had 100hp....it still would go but not well.
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2013 335i Msport Black sapphire/Coral red. MHD. stage 2--e30 VRSF DP, ER CP, Dinan Shockware. VRSF 12mm/15mm spacers. Cobra dashcam. Various codings.
Last car: 2011 335i Msport. JB4. Vrsf CP |
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