So,I'm coming from mechanic with codes p0300 p0301 p0302 p0303 p0304 p0305 p0306 p1313 p1314 p1316 i don't know any meaning for these codes what he tells me its a misfire problem and engine may have been gone bad on me. My experience with my x type 2002 3.0 is happens when its cold. Having hard time getting it warm it shuts off at least once or twice, sounds like engine is not getting proper gas amount with brakes hard as rock for few minutes but when it all warms up nothing seems to be wrong with it. engine light is on its flashing when its cold i also have a another light on at all times look like a snow flak on top of the engine light i will try to load a picture of it if i can, any help will be useful i don't know which way to follow with this problem thank you in advance

 

Look the codes up.

It's probably several things, but a vacuum leak is almost a certainty.

Buy a OBD scanner, you're going to need it.

Take one code at a time and diagnose.

 

With so many it's probably an air leak.
+1 on OBD tool - get one with live data so you can read LTFT values.

 

Could be the battery on the way out, disconnect the battery and touch both leads together that will discharge all the ecu's and see what codes come back.

Also get the battery checked as a weak one will cause a lot of issues

 

I'd put money on a vacuum leak.

 

Yakamoz, the P030X codes are all misfire codes. So, yes, the engine is probably running rather rough. The P1313/P1314 codes are catalytic converter inefficiency codes that are leading to cat converter damage. The P1316 code is simply saying that you cat converter is not working like it should and is resulting in excessive emissions.

Based on your codes, I would say to first do a vacuum check and make sure that the big 3 vacuum problems are not affecting you. After that, I would check on the passenger side, down near the alternator, you will see where all the COPs are grounded together on the engine block. Clean up those connections and the contact point on the engine block itself and see what you have then. After that, take a look at your MAF sensor. It may be that you got something inside the MAF and it is causing the ECU to think you are not getting the correct amount of air.