Jump to content
Sign in to follow this  
Blackfrogg

M50b25 rev jump/hang

Recommended Posts

Have a e30 m50 swap

Driving on cold engine revs drop as expected when changing gears. Once engine is warm the revs will jump 200+ rpm when disengaging clutch which seems to be proportional to how heavily I was accelerating before disengaging the clutch (faster acceleration = higher rev jump).

Revs dont jump when reving in neutral and disengaging clutch. Also doenst seem to happen when taking then engine into a higher rev range (4K+).

Ive done some reading and all I can find is drive by wire causing it which isnt a problem because its not electric, cleaning throttle body (clean), and cleaning the ICV (havent got round to that yet)

I dont have floor mats.

Any ideas as to why its fine cold and not when warm would be helpful.

Thanks

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...