Originally Posted by bblackh1
Verify the three settings on the TPS sensor. And check
the O2 sensor also. (Remember the correct FV duty cycle
is 50% with engine hot and O2 sensor disconnected.)
Agreed. Also check co when hot, if it's to rich then it'll be mega rich when cold. Don't worry about cps, it won't cause this issue. Also, try disconnecting the cold start injector and try another completely cold start cycle, this will indicate a rich mixture issue.