The car has around 70k on it. I have replaced sparks/wires, Coil pack also checked the cam senor. Still having the issue. If I can manage to get the car started and keep it above 1500rpm it runs smooth as butter. but soon as it drops below 1500 it dies down. I really dont want to sink more money into blindly trying to fix it. any help or suggestions would be great. Thanks guys!

These are the codes that i've pulled

P0340
P0455
P0303
P1698
P1787
P1692
P0118
P1498
P2303
P2300

 

Start with finding your air leak, vacuum leaks are most prominent at idle and will cause you to have misfire codes, mixture codes, o2 codes, etc.

It is also possible that this is an electrical fault in a pressure sensor or throttle body, but you need to find a quality scan tool to get the diagnostic right without throwing money at it.