Thursday, February 6, 2014
How to Remove a Catalytic Converter on an Audi TT
Most states require the use of a catalytic converter installed after the exhaust manifold, in line with the exhaust. The catalytic converter--often called the "cat"--acts as a filter and creates better emissions out of the end of the exhaust. Catalytic converters get clogged up over time and need to be replaced with a new one. If not, then the car will run poorly and wont be able to pass emissions testing. First though, you have to remove the catalytic converter.
Instructions
- 1
Pop the hood. Remove the air-intake tubing from the engine bay using the flat-head screwdriver. Pull the air box up and out of the engine bay. Unbolt the exhaust manifold at the front of the car from the forward exhaust section--which is the section that contains the catalytic converter--using the 3/8-inch ratchet, extension and sockets.
2Lift up the front of the car with the jack. Put it down on the jack stands and then remove the jack.
3Locate the oxygen sensors on the forward section of the exhaust, which are cylinders, one-half inch by three inches, that have electrical connections on them. Unplug the harness from the oxygen sensor using your hands.
4Unbolt the forward section of the exhaust, including the catalytic converter, from the rest of the exhaust using the 3/8-inch ratchet and socket. Lower the forward exhaust section away from the car.
