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Engine shuddering

Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=50393
Printed Date: 26-April-2024 at 18:06


Topic: Engine shuddering
Posted By: pani
Subject: Engine shuddering
Date Posted: 16-February-2015 at 11:41
2002 bmw 520

If I drive for a while, maybe 30-40 minutes, engine starts shuddering is the best way I can put it.   I wait til I hit a set of lights or pull over,  restart, and it fixes it.  

The yellow engine light has been on for last couple of months, dont know if its related, in last service,  mechanic said he couldnt  find anything wrong but as engine light could be one of many things but as long as its driving ok, it should be fine but this engine shuddering thing only started recently.   He said he'd spend a bit more time looking at it next time but money involved strpping engine down and as car is so old he said to take a bit of time to think about it.  (I do trust him)

Any ideas?  


Replies:
Posted By: Andrew Rolland
Date Posted: 16-February-2015 at 12:25
Sounds like engine exhaust gas recirculating fault. Blow by gasses get drawn into the inlet manifold to get burnt in the cylinders again but it sounds like you may have a fault in the system or it us blocked. I'm assuming it is an E39 and therefore petrol?

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Posted By: pani
Date Posted: 16-February-2015 at 12:33
yes, petrol e39

Posted By: Andrew Rolland
Date Posted: 16-February-2015 at 15:17
Get the codes read, might be a fuel or air mixture issue also.  Might be worth cleaning out the idle control valve.

-------------
Be exclusive and drive a Petrol 5 Series!

Current
'13 62 F10 535i MSport Auto

Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto

Posted By: pani
Date Posted: 16-February-2015 at 16:35
nice one, yep, will do. thanks.    due a service soon anyway.


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