996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

misfire/hesitate between 3000-3500 rpm...

Old Aug 28, 2008 | 03:48 AM
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misfire/hesitate between 3000-3500 rpm...

i have an 01 turbo with about 9000 miles on it now, when i am cruising on the highway with my RPM floating around 3000 rpm or 3400 rpm with maybe 10-20% throttle the car would misfire/hesitate..

However it does not have any signs of this hesitation when i am on the throttle and just revving the gear out.

Any idea what this might be?

TIA
 
Old Aug 28, 2008 | 06:19 AM
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I have no idea but my 01' does the same thing. If you find anything out please let me know.
 
Old Aug 28, 2008 | 06:26 AM
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Are you modified or stock?
 
Old Aug 28, 2008 | 06:37 AM
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Should be MAF , try to clean it
Here is a link to the diy : https://www.6speedonline.com/forums/...5&pagenumber=1
Hope this helps
see ya all and have fun
 
Old Aug 28, 2008 | 07:27 AM
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I got misfire too, problem was loose spark plugs.
 
Old Aug 28, 2008 | 07:35 AM
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after re-reading your symptoms I agree with ard...variocam
 

Last edited by wross996TT; Aug 28, 2008 at 12:50 PM.
Old Aug 28, 2008 | 10:33 AM
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could be maf, plugs, coilpacks...
 
Old Aug 28, 2008 | 10:50 AM
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Variocam?

Pretty sure there is something that switches over or engages around 3100 that causes the feeling of a stumble. No codes, right?

Previously I'd heard this attributed to the variocam- mine was doing it before new plugs, and after.

Edit: Never heard it here, rather over on Rennlist it was kind of a "over course it is the variocam' response...
 

Last edited by ard; Aug 28, 2008 at 03:19 PM.
Old Aug 28, 2008 | 11:52 AM
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my car does the exact same thing
and i have new spark plugs and a new maf ..
 
Old Aug 28, 2008 | 06:16 PM
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When you have the misfire/hesitations do you get a CEL code? If so what were they?
 
Old Aug 28, 2008 | 07:05 PM
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Change the plugs, Check and change coils packs if needed ,try the car..Still same

Change the MAF and be happy
 
Old Aug 28, 2008 | 07:19 PM
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Originally Posted by wirx
I got misfire too, problem was loose spark plugs.

loose spark plugs? huh?
 
Old Aug 28, 2008 | 07:36 PM
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A slight "misfire" at around 3100rpm is the variocam and is completely normal.
 
Old Aug 28, 2008 | 07:43 PM
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yes, completely normal - it's the variocam...like ard and Dr. T have said.
 
Old Nov 1, 2008 | 09:16 AM
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Is it normal to get misfire codes due to the variocam issue? Is this something that requires repair or something that you can just live with?
 

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