Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 11-14-2012, 03:49 PM
tek0011 tek0011 is offline
Registered User
Location: Minnesota
Join Date: Sep 2010
Posts: 41
Mein Auto: 2001 BMW530i
Rough start and knocking - then fine.

Hello fellow bimmer enthusiasts.

I am having an issue (or more) with my 2001 503i.

Throughout Summer she was rough starting kind of sluggish, I have to assume something fuel related, as if shes not getting enough fuel.

If I try to drive off, its like theres no gas/acceleration. If I drove for another 2-3 mins, it was fine for as long as I drove. Then there are times where it would rough/sluggish start as it did, have the same issue with gas/acceleration, and I would drive to a gas station/coffee shop (short distance). Stop the engine, come back to it and as I put it in reverse, it would go about 5-10 feet, then the engine would die completely. I would restart it back up, and it acted like nothing was ever wrong.

Fast forward to November in MN. 23 degrees outside.
Now that rough start up has turned into a VERY rough start up accompanied by a loud knocking coming from the top (or so it seems on initial inspection) of the engine.
The knock is occasional, about every 7-15 seconds. The car goes to a very low idle and has died twice. Otherwise it keeps going but keeps knocking. If I keep it revved around 1500-2000 RPM it seems ok, but the idle does drop as it seems its not getting enough gas. I keep it revved occasionally and do this for about 5-10 mins. Which after that is absolutely fine, no idle issues, no knocking.

Until the next time I start it again....

More information?

Reply With Quote

See More Related BMW Stories

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
Today's Posts Search
Thread Tools
Display Modes

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 On

Forum Jump

All times are GMT -7. The time now is 11:36 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms