Help our brilliant one.

I am trying to get my car ready for tracking and it started acting weird at the end of last season. When I shift, especially near redline and under full accel, the revs actually go up briefly when I would shift, like I was pressing the clutch in before I got off the throttle, which I was not doing.

Upon checking the CEL codes, I am getting the following:

P0455 Evaporative Emissions Control System Pressure Sensor Leak Detected (I think)

P0507 Idle Air Control System RPM Higher Than Expected (I think)

P1145 Cat problem (don't remember the exact code)

Any suggestions? Does this story all fit together or what? I know the P1145 is a cat issue but the other codes are new.

 

Tim - wasn't your car doing that same thing some time back on that EXCELLENT track video you posted?

Mike

 

Looks like an air leak. Now, the other thing I have seen is when the 02 goes nutty or the MAF they can throw all sorts of errors. I would clear everything and check for leaks and see what happens.

 

Thanks Stephen!

Yes, Mike. Same thing. I'm still trying to track it down.

Any suggesttions on where to hunt for the leak Stephen?

 

The only way to really know is to pressure test the system. Leaks can be a real pain in the rear.