BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      12-22-2012, 01:44 PM   #1
135iDCT
Lieutenant
135iDCT's Avatar
9
Rep
432
Posts

 
Drives: 135I
Join Date: Apr 2011
Location: wm

iTrader: (0)

what is this...?

when i down shift to 2nd at 50mph the rpm at 5000,this is normal, but this week i notice the rpm at 50mph on 2nd about 5500 what could be the problem

also when i hit the throttle 1/4 or 1/2 then take off my feet, i feel vibration under the driver seat, what's the problem??
Appreciate 0
      12-22-2012, 01:48 PM   #2
Dackelone
Moderator
Dackelone's Avatar
Germany
689
Rep
16,665
Posts

 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

iTrader: (1)

clutch slipping would be my best guess...
Appreciate 0
      12-22-2012, 01:54 PM   #3
135iDCT
Lieutenant
135iDCT's Avatar
9
Rep
432
Posts

 
Drives: 135I
Join Date: Apr 2011
Location: wm

iTrader: (0)

Quote:
Originally Posted by Dackelone View Post
clutch slipping would be my best guess...
what's the best solution, how much it will cost?

does this problem related to gearbox oil change, i didn't change it for long time

thanx...
Appreciate 0
      12-22-2012, 02:01 PM   #4
b1aze
Just one more taste...
United_States
22
Rep
1,419
Posts

 
Drives: 2010 135i
Join Date: Aug 2012
Location: Shirley, MA

iTrader: (14)

Rpm is independent of speed. The speed your car is moving at and what gear you are in will determine the rpm your engine will be running at.

Did you change to snow tires recently? Or change wheels at all? It wouldn't surprise me that a small difference in speed in 2nd gear would equate to 500rpm difference, say, 3-5mph may be 500rpm worth.
Appreciate 0
      12-22-2012, 04:48 PM   #5
135iDCT
Lieutenant
135iDCT's Avatar
9
Rep
432
Posts

 
Drives: 135I
Join Date: Apr 2011
Location: wm

iTrader: (0)

Quote:
Originally Posted by b1aze View Post
Rpm is independent of speed. The speed your car is moving at and what gear you are in will determine the rpm your engine will be running at.

Did you change to snow tires recently? Or change wheels at all? It wouldn't surprise me that a small difference in speed in 2nd gear would equate to 500rpm difference, say, 3-5mph may be 500rpm worth.
I know my car it's something in the gearbox, everything else is fine
Appreciate 0
      12-22-2012, 04:48 PM   #6
135iDCT
Lieutenant
135iDCT's Avatar
9
Rep
432
Posts

 
Drives: 135I
Join Date: Apr 2011
Location: wm

iTrader: (0)

Members need help...
Appreciate 0
      12-22-2012, 04:55 PM   #7
gdub
Private First Class
4
Rep
143
Posts

 
Drives: none
Join Date: Apr 2011
Location: dfw

iTrader: (0)

Have you changed your seat settings recently?

If not your transmission is shot and you will probably need to buy a new one.
Appreciate 0
      12-22-2012, 05:35 PM   #8
135iDCT
Lieutenant
135iDCT's Avatar
9
Rep
432
Posts

 
Drives: 135I
Join Date: Apr 2011
Location: wm

iTrader: (0)

Quote:
Originally Posted by gdub View Post
Have you changed your seat settings recently?

If not your transmission is shot and you will probably need to buy a new one.
the big problem my car is FBO but still under warranty, i hate to takeoff all the parts and replace the stock parts to enter the dealer bool sheet
Appreciate 0
      12-22-2012, 06:36 PM   #9
b1aze
Just one more taste...
United_States
22
Rep
1,419
Posts

 
Drives: 2010 135i
Join Date: Aug 2012
Location: Shirley, MA

iTrader: (14)

Is it making any sound? Or are the RPMs just higher? Find a decent incline hill and do a few 2nd gear pulls up it. If your clutch is shot, your RPMs should shoot up.
Appreciate 0
      12-23-2012, 09:07 AM   #10
katsooba
Private First Class
katsooba's Avatar
2
Rep
134
Posts

 
Drives: bmw 135i
Join Date: Apr 2012
Location: Israel

iTrader: (0)

any other problems?
shifting up\down from\to second? kickdowns no hooking up?
__________________
135i N55 / KW V3 / CP-E charge pipe / M3 Bushings / CP-E 5" DP / JB4 S2 / K&N inbox / M3 front control arms / Stud conversion kit / 12mm spacers
Appreciate 0
      12-24-2012, 03:46 AM   #11
RimasRS
Colonel
RimasRS's Avatar
28
Rep
2,397
Posts

 
Drives: 135i MT 2009 AW
Join Date: Sep 2010
Location: Europe

iTrader: (0)

What is this?

very good question
Appreciate 0
      12-24-2012, 05:16 AM   #12
Fed P
Private First Class
7
Rep
111
Posts

 
Drives: 135i
Join Date: Mar 2012
Location: Russia

iTrader: (0)

Quote:
Originally Posted by RimasRS View Post
What is this?

very good question
Reminds me of the Borat scene, "What is this?" "Cheese" "and what is this?" "Cheese" "and how about this?" "Cheese" =)
Appreciate 0
      01-01-2013, 09:20 AM   #13
DBoyBimming
New Member
0
Rep
9
Posts

 
Drives: BMW 135I Coupe
Join Date: Dec 2012
Location: Towson, MD

iTrader: (0)

I wouldn't be dropping into 2nd at 50mph as frequently as it seems you do. That's a huge strain on your trans. Do a pull In second and third and watch your rpms. If they populate faster than normal it's obv your clutch. A worn clutch usually slips under acceleration, not normal load. --- normally--- that's case by case.
Appreciate 0
      01-01-2013, 04:51 PM   #14
Wescuddles
Captain
Wescuddles's Avatar
9
Rep
636
Posts

 
Drives: bsm 135i
Join Date: Apr 2012
Location: Vancouver

iTrader: (0)

Quote:
Originally Posted by DBoyBimming
I wouldn't be dropping into 2nd at 50mph as frequently as it seems you do. That's a huge strain on your trans. Do a pull In second and third and watch your rpms. If they populate faster than normal it's obv your clutch. A worn clutch usually slips under acceleration, not normal load. --- normally--- that's case by case.
If 2nd is 5000rpm how is this extra strain on his transmission? Please explain.

If its auto it is my understanding it would rev match on downshift, theoretically this wouldn't cause any extra strain on the transmission. And by your logic any gear at 5000rpm would be equally damaging.

Please explain.
__________________
BSM 2008 135i
-VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip
Follow me on instagram: wescuddles
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:27 PM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST