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E36/7 Z3 (1996-2002)
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  #1  
Old 09-24-2013, 10:24 AM
ricochetrabbit ricochetrabbit is offline
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Location: Waterbury Ct.
 
Join Date: Sep 2013
Posts: 1
Mein Auto: 1997 Z3
Unhappy 97 Z3 misfire

This is my first BMW & I love it ... except for the strange problem I've been having lately. Started up one morning with a misfire. Had a code for #6 misfire. Plugs & connectors are new so I replaced the coil - ran good for a couple weeks. Then got a code for #3 misfire so replaced the other 5 coils. Ran good for a couple weeks. Started up - ran terrible - got codes for #3 & #6 misfire!!! Any ideas what to do next? Trying to not go to the dealer. Thanks!
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  #2  
Old 10-16-2013, 06:09 PM
n3srj n3srj is offline
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Location: North Port,Florida
 
Join Date: Jun 2013
Posts: 4
Mein Auto: 2001 BMW Z3 Roadster
misfire

Went down that same road. kept getting #3 misfire along with icv mechanicaly stuck open. (which it wasn't) replaced all the coils no luck.. replaced the icv and the lower intake hose and whaaa laaa that worked so far! Just what worked for me!
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  #3  
Old 10-16-2013, 07:30 PM
Blacklane Blacklane is offline
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Location: Springfield, Ohio, USA
 
Join Date: Jun 2011
Posts: 2,274
Mein Auto: 1998 Z3 Roadster
Multiple cylinder misfire with no other codes seems most likely to be an air leak after the MAF, including the CCV and hose, followed by a bad MAF.
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