Quote Originally Posted by ECU-MAN View Post
did you put in a new O2 sensor ?, and has the code come back after you replaced the sensor ?

commonly is due to a lazy O2 signal back to the ECU from the sensor. You may need to monitor the O2 signal to see how snappy it is in regards to throttle responce.
yep replaced O2 because i was getting an 01 code.. that cleared, and cel + stumble stopped (misdiagnosed and thought it was ICM)

i reset the ecu and it's only come back since.. my pgmfi relay's been soldered a while back too.

where would i monitor the o2 signal? at the connector? do you know the voltage expectancy of the o2 for idle signal and which 2 wires/pins? i thought i may as well check for fluctuations on idle since the CEL 43 only comes on after a while of idle anyway...