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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

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  #1  
Old 11-30-2012, 01:39 PM
Bennt771 Bennt771 is online now
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Mein Auto: 2000 540i,89 Por 930,Vett
Question Idle adjustment?

Is there anyway to self adjust the throttle a tad higher on a 2000 540i?
I did read somewhere (cant find it now) that you can but not sure where to do it?
My idle is at 400ish at idle when warm. And it surges a bit when its cold. No codes present.

Also are the peake code readers better than the Innova i normally use for these BMW's?
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  #2  
Old 11-30-2012, 02:29 PM
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hh3uunp hh3uunp is offline
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Mein Auto: 2001 Dinan m5
Get INPA and ncs expert. It's an electronic TB so that's the only way to do it
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  #3  
Old 11-30-2012, 03:29 PM
JimLev JimLev is offline
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Mein Auto: 540/6, S60 Volvo, Tribeca
No mechanical adjustment for the idle. It can be raised if you connect into the DME, however it shouldn't be surging. Fixing that may bring the idle up to where it should be.
Have you ever cleaned the throttle body and MAF. Also check all of the ducts from the MAF to the throttle body for cracks, same for the vacuum lines under the top engine cover.
Not sure what Innova you have but most OBD readers are better, quicker, and easier to use than a Peake, IMHO.
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  #4  
Old 11-30-2012, 06:14 PM
poolman poolman is offline
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Mein Auto: 525i station wagon
You got some work to do--clean the throttlebody and search and find where you have vacuum leaks--that the problems your facing--not bad--just gotta do some work
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  #5  
Old 02-13-2013, 03:54 PM
Bennt771 Bennt771 is online now
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Mein Auto: 2000 540i,89 Por 930,Vett
So, it seems i found my issue. MAF i guess it was on its way out. Car has not stalled and its been 2 weeks now. Tried a aftermarket one and it was crap. Ordered a Bosch and all is good. I posted wht was going on because it is rare that members do.
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Old 02-13-2013, 05:13 PM
edjack edjack is offline
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Thanks for the feedback. Sadly, you are correct.
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  #7  
Old 02-13-2013, 06:30 PM
Bennt771 Bennt771 is online now
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  #8  
Old 02-13-2013, 06:49 PM
Five30Eye Five30Eye is offline
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Mein Auto: 2003 530i
Would an idle, halfway between the first mark and 1k be abnormal? Too high? It's an auto.
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Old 02-13-2013, 07:07 PM
Bennt771 Bennt771 is online now
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Mein Auto: 2000 540i,89 Por 930,Vett
If yours is reading correctly, it seems a little high. But i would not worry about it much. The only thing i have read about the idle being to high is related to the throttle body. Have you messed with it ??? Have you cleaned it??
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  #10  
Old 02-13-2013, 09:02 PM
Five30Eye Five30Eye is offline
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Mein Auto: 2003 530i
No, haven't touched the intake system. Replaced VCG, that's all. Idle didn't change before/after, been at 750 (I guess) since I bought the car. Doing a DISA rebuild this weekend, I'll check the hoses closely. Think I need CCV for good measure and restful sleep.
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