991.2 GT3RS Misfire issue help?
02-23-2021, 11:24 AM
#17
Is there a specific code the dealer will see for this problem?
02-23-2021, 11:28 AM
#18
Instructor
Thread Starter
02-23-2021, 01:09 PM
#19
RL FTW!
glad there was a resolution.
glad there was a resolution.
02-24-2021, 12:28 AM
#20
Rennlist Member
That is the exact issue I was dealing with all summer. I changed plugs, and coil packs and that didnt work. I re-flashed the ecu to factory settings, and that didn't work. Then, the dealership had me replace my ecu even after re-flashing, and convert my exhaust back to stock and and that didn't work. It finally ended up being a cam speed sensor. They said it was only the second time they had seen a sensor not throw an error code but cause that issue. The problem is identical to the problem I was having, including the RPM range of the issue.
02-24-2021, 10:31 AM
#21
Mine was all out of pocket for most of it, since I had a tune and a Dundon exhaust system. They did the final fix under warranty once I put everything back to stock. I spent about 12k troubleshooting.
02-27-2021, 08:41 PM
#22
Rennlist Member
Ouch, did this change your view on having aftermarket parts on these cars l, or are you still open to it?
09-22-2023, 02:18 PM
#23
3rd Gear
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Just wanted to update this thread, I was finally able to get this car back on the track over the weekend after the dealer changed the cam speed sensor as kevrenmorland suggested. I'm happy to report that the cam speed sensor was indeed the issue and the car never skipped a beat. I really appreciate the tip from kevrenmorland as this really helped us solve the issue. Thank you!