My mechanic recommended I change my PGM-FI main relay on my 2001 Accord LX after reporting a DTC-505 code. He cleaned my throttle and increased a low idle. Seems to have helped. The car would idle roughly sometimes when stopped and sometimes would give off a slow rhythmic clicking noise while in park. Once I accelerate, there are no problems. I'm a novice, but this looks like a pretty straight forward and easy repair (as long as I disconnect the battery). Any other input or advice?

 

I'm moving your thread to the proper forum. A P0505 code is for the idle control system and shouldn't have anything to do with the main fuel relay.

I don't have a shop manual for your accord. If you plan on doing DIY work, you might want to get a shop manual for your accord. I got one from automanualsource.com for my TSX for $21.99 as a pdf and it is worth every penny.