Very erratic acceleration....

Z4-VILLA · 03-13-2011, 03:04 PM

Started last night after spirited driving...
now the clutch has been fading out and i will change it out but i dont understand why between 3 - 4 1/2 k rpm there is a huge stutter on the accelaration....in neutral its fine but as soon as i engage the clutch weak pulls and stutters....so i imagine that once i do my oem clutch replacement this will go away....
i will scan the computer to see if there are codes....
i dont think its anything major.
the idle is very smooth and stable btw
anyone else experience this?

pokeybritches · 03-13-2011, 03:10 PM

I wouldn't drive it until you find out what it is. My dad just fried an engine because the fuel pump couldn't keep up with the demand.

Z4-VILLA · 03-13-2011, 03:14 PM

im gonna check the obd

Z4-VILLA · 03-13-2011, 06:23 PM

just ran the reader....it read P110D

Z4-VILLA · 03-13-2011, 06:24 PM

according to the booklet that means its got a problem to do with the Air Fuel metering....
like i said easy fix....
hard part is figuring out where exactly to go looking.....

Z4-VILLA · 03-21-2011, 07:35 PM

Pedal unit might be at fault...but i still think its got somthing to do with the fuel filter....
i squeezed like 1/4 bottle of the injector cleaner stuff and it ran perfect for a whole 10 mins....might be time to replace the fuel filter...

Shipkiller · 03-21-2011, 08:08 PM

Fuel filter is internal to the fuel tank. It can be replaced but not easy..

The procedures and diagrams are on my site if you don't have the TIS.

Samjam927 · 03-21-2011, 08:56 PM

Hope u find an answer to your problem, nice video with your buddy wilson driving, made me laugh

Z4-VILLA · 03-21-2011, 09:05 PM

hahah Wilson is crazy about my Z...

wassup61 · 03-21-2011, 09:33 PM

start easy and cheap... plugs and O2 sensors and TPS

Z4-VILLA · 03-21-2011, 09:36 PM

i did tps....i guess o2 and plugs are next....might as well im about to hit 56k

habitat412 · 03-22-2011, 09:12 PM

If your clutch is going out and slipping that means your flywheel is starting to warp that's what that shuttering is all about. I just had to replace a clutch on my civic and went cheap and didn't do the flywheel as well and that's what I experience now. It's really not gonna harm anything, but isn't that pleasant to drive that way. I would just buy an aftermarket clutch kit with a flywheel instead of OEM if you are out of your warranty.

Z4-VILLA · 03-22-2011, 09:51 PM

well then how come theres absolutely no stutter when I squirt injector cleaner? im sure the F/W is fine....

03-13-2011, 03:04 PM	#1
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	Very erratic acceleration.... Started last night after spirited driving... now the clutch has been fading out and i will change it out but i dont understand why between 3 - 4 1/2 k rpm there is a huge stutter on the accelaration....in neutral its fine but as soon as i engage the clutch weak pulls and stutters....so i imagine that once i do my oem clutch replacement this will go away.... i will scan the computer to see if there are codes.... i dont think its anything major. the idle is very smooth and stable btw anyone else experience this?
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03-13-2011, 03:10 PM	#2
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	I wouldn't drive it until you find out what it is. My dad just fried an engine because the fuel pump couldn't keep up with the demand. __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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03-13-2011, 03:14 PM	#3
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	im gonna check the obd
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03-13-2011, 06:23 PM	#4
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	just ran the reader....it read P110D
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03-13-2011, 06:24 PM	#5
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	according to the booklet that means its got a problem to do with the Air Fuel metering.... like i said easy fix.... hard part is figuring out where exactly to go looking.....
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03-21-2011, 07:35 PM	#6
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	Pedal unit might be at fault...but i still think its got somthing to do with the fuel filter.... i squeezed like 1/4 bottle of the injector cleaner stuff and it ran perfect for a whole 10 mins....might be time to replace the fuel filter...
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03-21-2011, 08:08 PM	#7
Shipkiller Colonel 187 Rep 2,138 Posts Drives: Me Join Date: Oct 2007 Location: Virginia Beach iTrader: (3) Garage List 2008 BMW Z4M Coupe [8.50] 2003 BMW Z4 Roadster [8.33]	Fuel filter is internal to the fuel tank. It can be replaced but not easy.. The procedures and diagrams are on my site if you don't have the TIS.
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03-21-2011, 08:56 PM	#8
Samjam927 The One And Only 15 Rep 398 Posts Drives: 2006 TiAg ///M Roadster Join Date: Jun 2007 Location: Deerfield, Illinois iTrader: (0) Garage List 2006 Z4M Roadster [10.00] 2003 Z4 [5.00]	Hope u find an answer to your problem, nice video with your buddy wilson driving, made me laugh __________________ By Samjam927
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03-21-2011, 09:05 PM	#9
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	hahah Wilson is crazy about my Z...
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03-21-2011, 09:33 PM	#10
wassup61 First Lieutenant 5 Rep 325 Posts Drives: 2007 Z4 3.0SI Join Date: Aug 2010 Location: Lake Forest Illinois iTrader: (0)	start easy and cheap... plugs and O2 sensors and TPS
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03-21-2011, 09:36 PM	#11
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	i did tps....i guess o2 and plugs are next....might as well im about to hit 56k
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03-22-2011, 09:12 PM	#12
habitat412 Private First Class 8 Rep 174 Posts Drives: 2008 Z4 M Coupe Join Date: Mar 2011 Location: St. Louis iTrader: (2)	If your clutch is going out and slipping that means your flywheel is starting to warp that's what that shuttering is all about. I just had to replace a clutch on my civic and went cheap and didn't do the flywheel as well and that's what I experience now. It's really not gonna harm anything, but isn't that pleasant to drive that way. I would just buy an aftermarket clutch kit with a flywheel instead of OEM if you are out of your warranty.
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03-22-2011, 09:51 PM	#13
Z4-VILLA Banned 111 Rep 2,460 Posts Drives: Z4M Hardtop Roadster Join Date: Feb 2009 Location: Classified iTrader: (0)	well then how come theres absolutely no stutter when I squirt injector cleaner? im sure the F/W is fine....
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