Once again trans problems!
#20
10-21-2014, 05:16 PM
After months now and few transmissions, seem they think that's they only thing that could be wrong the car, it is still doing this..... Pcna said there is nothing wrong with the car anymore.... Won't even watch the well documented videos of the car doing it... No idea what to do..... Car can die any second or even worse in a intersection...
#22
10-21-2014, 05:29 PM
OP...really sorry to read about your situation.
I know someone posed the question - did you put the car back to stock, at least from an ECU perspective, to diagnose?
If the transmission hard parts, e.g. gears, etc., are fine, which it appears they are from your posts, then something is causing the vehicle to unnecessarily go into "limp" mode. The only time I am aware that this is caused, as designed, is via the computer safety features sensing something wrong, such as the tires spinning out of control and the car going sideways. Porsche has a term for this. If it is happening intermittently on your vehicle at random speeds and acceleration it is baffling that they cannot start with that programming spot first. There may be some stored event in the ECU/TCU that this happened?
I would put the stock tune back in and start there. Have you tried getting a second opinion from another reputable Porsche dealer or shop?
I know someone posed the question - did you put the car back to stock, at least from an ECU perspective, to diagnose?
If the transmission hard parts, e.g. gears, etc., are fine, which it appears they are from your posts, then something is causing the vehicle to unnecessarily go into "limp" mode. The only time I am aware that this is caused, as designed, is via the computer safety features sensing something wrong, such as the tires spinning out of control and the car going sideways. Porsche has a term for this. If it is happening intermittently on your vehicle at random speeds and acceleration it is baffling that they cannot start with that programming spot first. There may be some stored event in the ECU/TCU that this happened?
I would put the stock tune back in and start there. Have you tried getting a second opinion from another reputable Porsche dealer or shop?
#23
10-21-2014, 06:08 PM
OP...really sorry to read about your situation. I know someone posed the question - did you put the car back to stock, at least from an ECU perspective, to diagnose? If the transmission hard parts, e.g. gears, etc., are fine, which it appears they are from your posts, then something is causing the vehicle to unnecessarily go into "limp" mode. The only time I am aware that this is caused, as designed, is via the computer safety features sensing something wrong, such as the tires spinning out of control and the car going sideways. Porsche has a term for this. If it is happening intermittently on your vehicle at random speeds and acceleration it is baffling that they cannot start with that programming spot first. There may be some stored event in the ECU/TCU that this happened? I would put the stock tune back in and start there. Have you tried getting a second opinion from another reputable Porsche dealer or shop?
Thanks for your time.... 2 dealers have looked now Porsche of buck county and Knopf Porsche in Pennsylvania .... It def only happens during wild wheel spin which would be my guess as to why they cannot replicate....coming from a drifting background I enjoy throwing the car around a shame it won't let me at all... Psm off or on it happens... I data logged it happening on my cobb but it came up with a error code on the file...... The dealer said they see over revs but don't know why ....
#24
10-21-2014, 06:50 PM
This is good news...and bad news. The good is your car is working as they designed it. The bad is with the tune and light mods it goes into limp mode with excessive wheel spin. There should be some experienced tuners who monitor this board that can lend some advice. There are many heavily moded tips around,e.g. tune, exhaust, moded turbos, etc. Those tuners/shops must have created some workaround otherwise those buyers would not spend north of 20-30k to modify their rides.
I would get in contact with some of the major sponsors on this board to determine how they overcome this.
I would get in contact with some of the major sponsors on this board to determine how they overcome this.
#25
10-21-2014, 06:52 PM
This is good news...and bad news. The good is your car is working as they designed it. The bad is with the tune and light mods it goes into limp mode with excessive wheel spin. There should be some experienced tuners who monitor this board that can lend some advice. There are many heavily moded tips around,e.g. tune, exhaust, moded turbos, etc. Those tuners/shops must have created some workaround otherwise those buyers would not spend north of 20-30k to modify their rides. I would get in contact with some of the major sponsors on this board to determine how they overcome this.
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