i went to O Reillys n they said it was mass air flow ,that did't work then i went to auto zone n they said it had an 0715 reading. my engine light did not go off. I took it to mechanic and he drove it n said the engine light went off w/o him doing anything.Next day I drove it to work n light was off as I started to leave work light come back on
engine light was on now my car wont shift into passing gear could it be tcm? on 2004 Kia Rio
Does it shift ok when the check engine light is off? Retrieve current codes and repost.
sometimes it shift good even with engine light is on. I went to auto zne n oreillys n they both checked it n come up with coes 0727,0753,p1529,po604