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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 02-17-2015, 06:26 AM
se4y se4y is offline
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Location: Beijing,China
 
Join Date: Feb 2014
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Mein Auto: z4 e85
A problem about 1800rpm

It is a little hard for my z4 to cross 1800 RPM in city driving. It was always keeping gasping in 1800 RPM for a time before it went to 2100 RPM and then engine and exhaust noise will sounds perfect. My question is how to overcome this and restore the factory defaults?
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  #2  
Old 02-17-2015, 08:24 AM
chickdr chickdr is offline
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Location: Atlanta, GA
 
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Mein Auto: '06 M Roadster Imola/Blk
I would check the MAF. Could need cleaning, or replacement. There are other possibilities too I am sure others will chime in with.
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Old 02-17-2015, 02:32 PM
sudoer sudoer is offline
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Location: California
 
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Mein Auto: 04 Z4 3.0
Check for cracks in your intake boot. Do you hear a whistling sound sometimes?
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Old 02-19-2015, 09:42 AM
se4y se4y is offline
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Mein Auto: z4 e85
Quote:
Originally Posted by chickdr View Post
I would check the MAF. Could need cleaning, or replacement. There are other possibilities too I am sure others will chime in with.
Thank you ! z4 2.5si(2007/12) has MAF? I can't find it in realoem.com
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Old 02-19-2015, 09:44 AM
se4y se4y is offline
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Ok will check tonight. thinks!
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  #6  
Old 02-19-2015, 10:41 AM
chickdr chickdr is offline
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Mein Auto: '06 M Roadster Imola/Blk
I thought all of the Z4 motors had MAF's. Maybe not?
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