Well, you can buy a fancy tool. Or do it the getto way yo check for a clogged cat.
But you haven't checked to see if you can rev the engine up with it in neutral yet.
1. Unscrew the O2 sensor that is between the engine and the cat.
1A. Attach the gauge to the port and start the engine, make note of the pressure reading.
1B. With the O@ sensor out, start the engine and see if you can rev it up.
Tuesday, January 11th, 2011 AT 6:51 AM