Originally Posted by bbaz
Also recently my mech currently tried running with O2 sensor unplugged it, engine ran fine for about 15 - 25 min but then stalled.. weird thing is the Service engine light never came on. He wanted to see if the service engine light would come on and also thought the new O2 sensor might be bad but still stalled
The light should have come on
After about 15-25 minutes the eng would have been at operating temp! The computer will be looking for info from the o2 and ECT sensors, not getting the right info will a code and eng will stumble , sometimes die.
Make sure you bat cables are squeeky clean, clean all grounds , raditor support, both bolts on back of eng at trans.
You need that light (SES) to come on !