Jump to content
Sign in to follow this  
fredbmw

e24 rough idle / Alternator / water pump

Recommended Posts

Hi , my first post and question. My e24 rough idles after its warmed up and been driven. eg at traffic lights the car almost stalls. The idle ramps up and down, and then stalls eventually. There is also a mechanical whirring noise from the engine which occurs at the same time. I think ive narrowed it down, my take is the bearing in the alternator is slowly seizing up, and putting load on the engine? i tested it by taking of the alternator / water pump belt and the whirring stopped, and the idle was fine again. So would a problem with the alternator (most likely not water pump?) cause this rough idle and stalling?

Share this post


Link to post
Share on other sites

It would cause excess load on the engine and a buggered bearing would also cause a whirring noise. Would it cause it to stall? it shouldn't.

But you've established the alternator needs repairing or replacement, so fix that and go from there I say.

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...