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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 03-23-2014, 01:58 PM
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Hogie Hogie is offline
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Mein Auto: 330i, Z3 2.8L, 545i
Change Default RPM at Idle?

Can the idle RPM be changed? Mine has always been 500RPM A/C off and 750 A/C on. With INPA I can set to about 600 which is right where I think it should be. However on restart it is defaulted back to 500/750.

750 seems just to high and it seems that the torque converted is half ready to go. at 600 its a nice smooth idle.
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  #2  
Old 03-23-2014, 03:20 PM
etnav382 etnav382 is offline
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What makes you think the idle should be at 600? Mine has always been the 500/750 like you stated. I think that's how BMWs and some modern v8s idle at.
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Old 03-23-2014, 03:30 PM
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Hogie Hogie is offline
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Mein Auto: 330i, Z3 2.8L, 545i
Well the 500 RPM is fine ( A/C off). But at 750 mine has always fell like its a bull in a china shop... ready to go, it is almost like the torque converter is engaging and I feel the load. I say 600 because I set it there and it idles great while in drive, its just that I am not setting the true default so when I turn her off it resets.

Its been this way since I purchased her as a CPO back in '07. Yes - back then, I had it in for warranty with the same complaint and as you point out it idles where BMW wants it to - its just not where I want it.
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Old 03-23-2014, 04:13 PM
etnav382 etnav382 is offline
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Ok, I do agree that at 750 it does feel jumpy. I've taken my foot off the brake and at 750 the car will creep up to about 5 mph useful for stop and go traffic but horrible when trying to park or something similar.

I would think this could be solved by getting a tune for the ecu and asking them to change the idle speed.
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Old 03-23-2014, 05:40 PM
aber57 aber57 is offline
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I have an Autologic tool and I changed mine. After I selected the rpm it sped up the idle but I had to save the setting. I wonder if INPA requires a save action also?
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Old 03-24-2014, 02:42 PM
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Hogie Hogie is offline
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Mein Auto: 330i, Z3 2.8L, 545i
Quote:
Originally Posted by aber57 View Post
I have an Autologic tool and I changed mine. After I selected the rpm it sped up the idle but I had to save the setting. I wonder if INPA requires a save action also?
Ahh! I do not have an Autologic tool, just INPA and NCS Expert on my laptop. There was not a program or save option when on the INPA Idle screen. What Idle speed did you choose and did it help address the issue I describe?

As a side note I also verified my VVT setting at .799 (.8 setting). I did actually lower to .6 just for the heck of it and programmed to DME.
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Old 03-24-2014, 04:00 PM
aber57 aber57 is offline
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I have manual trans but I like the idle quality of 600 RPM idle sped. Various normal loads placed on engine are more coarse at the lower idle speed. I mean things like turning steering wheel prior to backing up or when the electric cooling fan comes on. The higher idle speed seems to make clutch engagement less touchy when I do some slow speed things like creeping forward in a drive through queue.

Maybe someone else with INPA will respond that has done this successfully.
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