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

What causes car to go in limp mode ?

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Old Feb 15, 2009 | 05:14 AM
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What causes car to go in limp mode ?

Hello,somethimes my car goes in limp mode but it doesn't seem to be overboosting,I'm running 1 bar software oem actuators and k16/24 turbo's
Today they programmed oem flash back to see if the limp mode still happens
I thought only overboosting could lead to limp mode or am I wrong?
Thanks
 
Old Feb 15, 2009 | 08:04 AM
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When mine goes into limp mode it usually means time to change the spark plugs. There are other causes of course.
 
Old Feb 15, 2009 | 08:20 AM
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There are many instances or combination of codes that will cause the car to limp. From faulty control modules to speed sensors....
 
Old Feb 15, 2009 | 08:39 AM
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Originally Posted by dixie
Hello,somethimes my car goes in limp mode but it doesn't seem to be overboosting,I'm running 1 bar software oem actuators and k16/24 turbo's
Today they programmed oem flash back to see if the limp mode still happens
I thought only overboosting could lead to limp mode or am I wrong?
Thanks
Hey Dixie,

Just emailed your back.

Is the DME storing any DTC's?
 
Old Feb 15, 2009 | 10:49 AM
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No DTC's at all,I've been driving the car with oem software for about 150 miles and no limp mode,so I suppose it has something to do with the upgraded software...
 
Old Feb 15, 2009 | 12:21 PM
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Can someone describe limp-mode in more detail?
 
Old Feb 15, 2009 | 12:36 PM
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In the factory manual it is called limp-home...AFAIK...the dme restricts functions related to gearing (tip) and/or power (e.g., boost, timing).
 
Old Feb 15, 2009 | 12:48 PM
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Sounds bad to me, and this happens with a tune sometimes? This is making me think twice about a tune.
 
Old Feb 15, 2009 | 01:02 PM
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Limp-mode: I f certain sensors, such as oxygen sensor(s) fail the DME will switch to emergency mode providing driver with extremely reduced performance, but leaving the 996 drivable for short distances. It is normally accompanied with a cell light. If it is steady can be driven if it is flashing do not continue to drive because of major damage to catalytic converter or engine... From the book "996 the essential companion"...
 
Old Feb 15, 2009 | 03:30 PM
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Too much to drink, nagging, wife gains a bunch of weight, tired...oh wait, we are talking about the car here, my bad....
 
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