Learn how to change the 3rd pressure switch in a 2008 Honda Accord V6. The car was throwing a code P0847, prompting this install and a tranny fluid change. There's not a lot of space to work with for this install, but it's doable.
Learn how to change the downstream (after the catalytic converter) O2 sensor. My Civic Ex was throwing check engine code P0420, which prompted this install. I was able to figure out that it was the O2 sensor rather than the actual cat because the CEL intermittently was coming on and off over about a weeks time. Like I said in my other Air/Fuel/O2 sensor video, Denso parts are cheaper than OEM, but they are basically OEM since Denso makes many parts for Honda's straight from the factory.
Learn how to replace the cam position sensor on a 2004 Honda Civic EX. If you have a check engine light on and the car keeps going into limp mode, this could be your problem. I was throwing both a code P0340 and P0344. This did the trick, car runs perfect now! This install is very difficult on the EX due to the ABS modulator, so be prepared. If you have a DX or LX, this install will be easy to moderate. This install will work on any 2001-2005 Civic.