shooting engine codes

my 2000 neon is shooting these 4 engine codes...

1684
0340
1193
0071

please help me out..thanx!

http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm

Hey das---you seem to know a lot about diagnostic. From this and other posts. Do you own diagnostic equipment of have any suggestions on what's good to buy. I think it may be a good investment :) What I have is really primative-lol.

I have an Actron 9135 that I got from eBay for $100. It's worth it, to be able to diagnose my own problems. Especially for my wife's car.

I have an Actron 9135 that I got from eBay for $100. It's worth it, to be able to diagnose my own problems. Especially for my wife's car.

As always....THANKS DAS!