Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

600 Rpm At Idle, Ok Or To Low?

Recommended Posts


I find the idle run on my car is a bit to low, running at 600 rpm, sometime even down to 500rpm, so to say that I couldn't get so smooth start in the 1st. gear when the engine not enough in-between-gas, it feels like the car loses both power and torq.

I have run the PST2 and the DME showed only problem on the "Lamdasond".

Would a 800 rpm at idle run smoother at start?



Link to comment
Share on other sites

engine stalled 2 time yesterday and payed PZ a visit this morning and the outcome was, not to your surprise, new MAF was installed and after that the engine runs quite calm at idle.

the MAF was replaced under Warrenty w/o charge :thumbup:

to my surprise, they said they can't really adjust the idle run, is that right?

another thing I noticed, w/ aircon on, I get 800 rpm at idle and w/o aircon 600 rpm.

is that so with you guys also?



Edited by alter_schwede
Link to comment
Share on other sites


to my surprise, they said they can't really adjust the idle run, is that right?

another thing I noticed, w/ aircon on, I get 800 rpm at idle and w/o aircon 600 rpm.

is that so with you guys also?



Yep, idle speed can't be adjusted, it's programmed into the DME.

Idle is supposed to be 700 min-1 w/o aircon and about 820 min-1 w/ aircon, but you can't accurately tell by the rev counter. Incidentally, this change in idle changed with later versions of the DME.

Also, idle w/o aircon is always a bit lumpy. If it is very lump, it could be some build-up on the intake valves or high levels of petrol in your oil. Either way, some spirited motorway driving will usually get rid of it.



Edited by umn
Link to comment
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.

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.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.