chris25uk

ok guys i have a problem with my car, its a 93 wrx and lately it has been playing up on boost, smelling of fuel and sometimes getting abit of grey/dark smoke on boost out of the exhaust. the car wont boost above 0.5 (well it does now and then but mostly it wont) has a very different exhaust note on boost when it has this problem to. i checked for codes on the ecu today and it came up with 21,24,32 and 45 (pretty sure i got them right) now the ecu was cleared last summer so these faults are not old codes stored on the ecu. engine light only ever comes on when the car is cold, i think thats becuase it has a problem with the temperture sender and sometimes if im driving in traffic in say 2nd or 3rd for abit.

what do these codes mean? and could any of them be causing my overfuelling and boosting problem?? thanks for any advice or help you can give me

myblackwrx

iTrader: (1)

0.5bar is limp home mode.

21 is coolant temp sensor
24 is ISC valve
32 is A/F sensor
45 is Pressure sensor

(Taken from Scoobypedia | Trusted knowledge for everything Subaru | Scoobypedia browse)

Coolant temp sensor gave me a lumpy idle and the fans would switch.
The rest i have no idea about.