issues encountered with your GT3
09-05-2014, 05:14 PM
#166
Racer
Join Date: Feb 2014
Location: edmonton, alberta, canada
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FWIW, it's not really an "engine related" issue, it's a vacuum operated flap located in the exhaust stream just before the center muffler. In fact, it's a part that wasn't replaced and would have been reused with the new engine. It's not unusual for the valves to stick although it usually happens when the sport exhaust system is bypassed and the valves are left in one position over a period of time. As was pointed out, an easy fix....
09-11-2014, 10:26 PM
#168
Drifting
Dude, I experienced the same issue with the stuck exhaust valve today. The sound was completely different and more like a humming sound. I pulled to the side turned off/on the car and the sound of exhaust went back to normal. This is the 1st time it does this. I talked to service and they recommended to bring the car if it does it again and recommended to bring it there without turning the car off so that they can turn on and off the 3 valves using software to see which one is bad. Hope this is a one time deal.
09-11-2014, 10:36 PM
#169
Drifting
The droning actually kicks in and never leaves until you restart the engine. During the droning run, its extremely bassy at 4100 to 5500 and it affects the exhaust all the way down to idle. the shifts no longer sound poppy and idle is very rough. Once you restart, its gets that crisp exhaust opening at 4K and all is fine again. Very weird.
Its happened twice already and both time are highway runs.
Its happened twice already and both time are highway runs.
09-11-2014, 10:40 PM
#170
Race Director
Dude, I experienced the same issue with the stuck exhaust valve today. The sound was completely different and more like a humming sound. I pulled to the side turned off/on the car and the sound of exhaust went back to normal. This is the 1st time it does this. I talked to service and they recommended to bring the car if it does it again and recommended to bring it there without turning the car off so that they can turn on and off the 3 valves using software to see which one is bad. Hope this is a one time deal.
09-11-2014, 10:41 PM
#171
Race Director
I wonder if may be the down time for all of our 2014s have an affect on this valve. If more report we may want to contact Porsche headquarters and advise them that this may need to checked on the 2014s.
09-11-2014, 10:46 PM
#173
Drifting
Mike, You may be right on port/salt water effects. I don't know. I should have driven the car right back to dealer without restarting. Service guy said 3 valves. I be sure to ask him about the 3rd one next time and report back. He did mention there was a 997 GT3 with same issue and they replaced each valve one at a time and the problem was solved.
09-11-2014, 11:04 PM
#176
Race Director
Just seemed interesting that two cars which sat at port had experienced the same problem. May be a total coincidence. Anyway, all speculation.
09-12-2014, 01:33 AM
#179
Pro
Join Date: Apr 2013
Location: NEW YORK
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Silver, once it gets stuck you will notice rough revs from idle. The good news is, its a very simple fix. It took my dealer 15 minutes and that includes lift and coffee break time.