Pontiac Repair: Stalling after repair 2001 Pontiac Montana, fuel level sensor, pontiac montana

Question
Just replaced fuel level sensor, upstream O2 sensor, plugs and wires. Computer keeps tripping SES light and van eventually stalls after surging for a minute or so.  Does the computer need to relearn a new O2 sensor or could it be something else?

Answer
Hi mark:

The computer doesn't need to learn the sensor. What codes are being stored in the computer? If the SES lamp is on there are codes stored. If you know what the code is it's a place to start. It's odd for one of these to stall. They are pretty good enines and don't usually have stalling issues. HAVe you checked fuel pressure when it stalls out? this engine needs between 45-50 PSI to run right.. I would suspect maybe a vacuum leak somewhere or a idle control motor issue?