check engine light codes
galantprobs
11-20-2006, 02:17 PM
Im having problems with finding out what codes po100 and po300 are for my 99 galant 4 cyl and exactly what to do can anyone help??
stv840
11-21-2006, 02:41 AM
the po100 is air flow circit code
po300 is random misfire
ck mfi relay I belive it's relay 1 as it controls the air sensor and fuel injs
but likely it could be a vacumme leak from intake
po300 is random misfire
ck mfi relay I belive it's relay 1 as it controls the air sensor and fuel injs
but likely it could be a vacumme leak from intake
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