After my cam swap, my trucks been throwing some codes. It's been p0300 and p0175. It also seems to chug at lower rpm's. After 3000 rpms it comes alive but feels like it might be chugging a little. My tuner said one of my o2 sensors was reading a little different so I swapped them front to rear an rear to front. figuring we could tune the rear out. But it's still doing it. Any Ideas?

 

Today I noticed my torque converter isn't locking in 4th gear. I'm assuming thats because of the misfire. I'm going to check my plugs tomorrow, there the originals with 60,000 on them. Would bad plugs cause this?

 

a misfire will unlock the tc. Did u pull the plug wires during the install, would be my first guess if you did.

 

P0175 - Fuel Trim System Rich Bank 2
P0300 - Engine Misfire Detected

Did you swap injectors with the tune?

 

tune ur misfires to like 2000 tolerance. Then focus on maybe having a bad O2 sensor. But I think ur bogging may be like what I experience. Turn ur MAP perameters to about 200kPa. Check this thread: http://www.hptuners.com/forum/showth...ighlight=P0121

 

No they're the stock ones.

 

I checked a few plugs today. They looked good. I checked all the wires....
I feel kind of stupid there was a loose wire. Man does it run smoother on 8 cylinders.