Hey guys. I have a 2001 Pontiac Grand Prix GT which has the SS M90 kit on it. Recently, I've noticed my car's RPM is strangely higher than normal from about 100 km/hr and up. Sometimes it's normal, and other times it runs close to 3000 RPM. There have also been a few times where my car won't shift into 4th gear and my RPM is even higher (3500 RPM). I'm guessing this is the 4th clutch shaft wearing down. I also got the codes P0716 and P0717 and I'm pretty sure this is related to the problem. Does anyone have any advice?
On a side note, can removing a rear 02 sensor cause a P0141 code? This code just recently appeared, even though my rear 02 has been gone for months.
