hey i got the 0304 knock senser code and a intake air temp senser code 0401... are these easy to get replaced?

 

Yes.
1. The IATS (0401) is plugged into the air box - you'll see the wires leading up to it on the firewall side of the air intake.
2. The KS is in the V of the engine. Read the stickies - there are good instructions on how to replace it. You DO NOT have to pull the manifold off (as the FSM and Haynes suggest).

Cheers.

 

Btw, both are easy to do yourself - you'll save a few hundred in labor. Or find a local ORG member who will do it for cheap(er) than any local shop or dealer.