Post Catalytic Converter O2 Sensor seems to be the most likely issue.
Could also be the catalytic converter, or an exhaust leak.
The cheapest part to throw at it is the O2 Sensor. (cheapest place I've found to get them is autopartswarehouse com)
Hyundai states the 2001 hyundai accent vehicle manual of timing belt replacement timing belt on an accent should be changed every 60, 000 miles.
The 2002 Accent booklet states that the Timing Belt should be changed at 60,000 Miles.
According to the Gates website ( they make timing belts etcetera ) For the 1.6 litre four cylinder engine in a 2005 Hyundai Accent ( the timing belt is changed at 60,000 miles )
30psi
Hyundai dealer or service station should stock this
yes
They are absolutly the same, you should have no problem at alla making the swap.
It is not recommended that you replace the wheel bearings on your Hyundai Accent by yourself. Rather you should take the vehicle to a repair shop or to the dealer where you bought the vehicle for servicing.
No you should not do it. Always replace it before moving the vehicle
You should pull the codes and then clear them with a scan tool.
Should be two, one in front and one in back.
You don't. This should only be done by an expert.