Code p0105 and p0300

[98mitsubishigst]

So i have two codes showing..

i have read that to fix the code p0105 you must clean the MAS, or get a new one.. Any other information on this would be appreciated..

Also, i know this code is very vague, i have read up a lot on it.. What do you guys think code p0300 could be??

Thanks =)

 

[rebuilt_gsx]

Spark Plugs, Wires, Coil, Injectors, Clogged Catalytic Converter. That's what I would start with. Start with the cheapest and work your way down. Any other symptoms you have that can help diagnose it?