How to Raise the idle on 540i

[Brians540ia]

Does anyone know how to do this? My idle is 450-500 most of the time in drive and tends to run a little rough. If I give it a little gas and bring it up to 600-700, it smooths out nicely. Any suggestions?

Thanks

Brian

[MBXB]

EAT Chip smoothed out my idle.
Ramon

[632 Regal]

same question here, 530

[tim s]

tim s.

[new540iowner]

I'm considering the chip and my idle is the principal reason I would buy it. My 94 540 also idles in the 500-600 range and would like it to idle, forgive for saying this, more like a Toyota. Car runs great, as one forum member said, above 700 RPMs but the idle is making me consider another car.

[Brians540ia]

What's the ICV?

[tim s]

round shiny cylinder on top of the throttle body. first remove fancy bmw engine cover. there is a small tube that comes from the top of the intake boot then connects to the icv. remove the idle control valve from the throttle body, remove small tube, & disconnect wire connection. clean thoroughly w/intake cleaner. a small moving part inside should move freely. they tend to get dirty & not move properly.
enjoy
tim s.

[Brians540ia]

I'll try it. Thanks Tim!

[MBXB]

I posted my EAT Chip test results a week ago. Do a search on EAT or my ID.

Ramon
MBXB


I'm considering the chip and my idle is the principal reason I would buy it. My 94 540 also idles in the 500-600 range and would like it to idle, forgive for saying this, more like a Toyota. Car runs great, as one forum member said, above 700 RPMs but the idle is making me consider another car.

[MBXB]

Tim,
Is this something easy to do when I'm changing plugs, since I'll have the cover off anyway?
Ramon


round shiny cylinder on top of the throttle body. first remove fancy bmw engine cover. there is a small tube that comes from the top of the intake boot then connects to the icv. remove the idle control valve from the throttle body, remove small tube, & disconnect wire connection. clean thoroughly w/intake cleaner. a small moving part inside should move freely. they tend to get dirty & not move properly.
enjoy
tim s.

[tim s]

it was quite easy for me, but i was changing the intake manifold gaskets when i cleaned mine.
tim s.

[MBXB]

Before I got the EAT chip, I had a rough idle that I could not get rid of. I had 2 leakdown tests at 30K intervals, at least 3 trips to the local stealer and an indy. I just gave up on it and lived with it. (My 140K mile Nikasil engine is still holding up)
After switching to the EAT chip, the roughness just vanished. And I havent done my Inspection II yet, which is due pretty soon.

Ramon
MBXB


I'm considering the chip and my idle is the principal reason I would buy it. My 94 540 also idles in the 500-600 range and would like it to idle, forgive for saying this, more like a Toyota. Car runs great, as one forum member said, above 700 RPMs but the idle is making me consider another car.