93 chevy suburban

Ok, I have gotten by the tranny. As was suspected a rebuilt tranny did the repair.

Now, on to the next mission. Service soon light is comming on. The smell of the vehicle while idling is rich. This vehicle is fuel injected; however, my problem is like when the carburators would load up and would have to be leaned up. With fuel injection could it be the oxygen sensor, an adjustment somewhere or timing?? Did a test and received an error code 32. As you know Auto Zone does a free test that is very broad. Not enough information. Short of an expensive test and repair bill can this be handled cost effectively?

An O2 sensor might be the problem. But when was the last tuneup, etc? There are a LOT of variables when diagnosing repairs!

check your EGR valve.