ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Roadster and Coupe > General BMW Z4 Forum
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      05-17-2018, 08:40 PM   #1
dbarton62
Lieutenant Colonel
dbarton62's Avatar
Canada
330
Rep
1,648
Posts

Drives: 04ZR 3.0 6 speed VF SC
Join Date: Feb 2013
Location: Kitchener Ontario Canada

iTrader: (2)

Idle Hunting

So at a stop the idle hunts from maybe 700-900rpm. Regular idle is around 710-720rpm
This just started tonight.
What are the prime suspects?
No codes present.
__________________
Vortech V3Si, custom ducting, 2.62 pulley, multi port WMI, TTFS tune, Tial BPV,Ceramic header, magnaflow section 1, SS race muffler, megan mounts,42 design catch can, CDV delete ,custom strut bar,3.64LSD, H&R bars, Hotchkis links.ST coils,Koni Yellows. Megan camber arms. Carbon interior, SSK, UUC brake lines, PowerStop Brakes. Poly. CF Aero.APEX
Appreciate 0
      05-18-2018, 07:54 AM   #2
garz747
Private First Class
40
Rep
189
Posts

Drives: 2007 Z4 M Coupe
Join Date: Jul 2015
Location: Toronto

iTrader: (0)

Possible bad coil pack on one of the cylinders.
Appreciate 0
      05-18-2018, 07:37 PM   #3
StickMon
My other car is on Mars
StickMon's Avatar
United_States
491
Rep
2,885
Posts

Drives: 2006 MR
Join Date: Feb 2011
Location: Lo-Cal

iTrader: (1)

Throttle position sensor?
I had that a while back.
Eventually gets weirder and weirder until it throws a code.
OH, and it might go into limp mode at start.
__________________
Warning: May contain traces of nuts.
Appreciate 0
      05-30-2018, 07:53 PM   #4
henfjel
Registered
0
Rep
1
Posts

Drives: BMW E34 525ix
Join Date: May 2018
Location: Norway

iTrader: (0)

Eventually it will throw a code, but both of the above is easy to check and/or measure.
Maybe a vacuum leak?
Appreciate 0
      05-30-2018, 08:46 PM   #5
dbarton62
Lieutenant Colonel
dbarton62's Avatar
Canada
330
Rep
1,648
Posts

Drives: 04ZR 3.0 6 speed VF SC
Join Date: Feb 2013
Location: Kitchener Ontario Canada

iTrader: (2)

Quick update.
So the upstream O2 sensors are toast and took out my cats.
Time for metallic cats I guess
__________________
Vortech V3Si, custom ducting, 2.62 pulley, multi port WMI, TTFS tune, Tial BPV,Ceramic header, magnaflow section 1, SS race muffler, megan mounts,42 design catch can, CDV delete ,custom strut bar,3.64LSD, H&R bars, Hotchkis links.ST coils,Koni Yellows. Megan camber arms. Carbon interior, SSK, UUC brake lines, PowerStop Brakes. Poly. CF Aero.APEX
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 11:25 AM.




zpost
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST