2 code please help.

[Killa]

When I just bought the car, this code came up. P1443, some time it go away and now it stay on all the time for last 2 week. The car some time idle rough, so today I went to check the code again and this code came up P0175. Can any one tell me what these 2 code is and how hard is to fix it ? thanks

1998 Mustang GT Manual 136k miles

 

[chuck943]

Diagnostic Trouble Code (DTC) P1443 indicates an incorrect evaporative system purge control valve flow.

Possible causes:

Obstructed, open or cracked hoses between EVAP canister purge valve and intake manifold.
Damaged EVAP canister purge valve.
Damaged PF sensor.

DTC P0175 bank (2) indicate the fuel/air ratio is too rich
Possible causes:

Fuel system

Excessive fuel pressure.
Leaking fuel injector(s).
Leaking fuel pressure regulator.
Low fuel pressure.
Contaminated injector(s)


Induction system

Restricted air inlet.
PCV system.
Fuel purge system!!!!!!!!

 

[BlackGT4.6]

I had both these codes when I first bought my car and some how it turned out to be a dirty maf from the K&N filter oil. cleaned it and no more code.