1996 3.4l engine light, sputtering/backfire on acceleration
#22
Now your car runs good until about 15 minutes into running and then it starts acting up. Well I would guess it is related to your car going into closed loop mode where it takes readings from all sensors and monitors fuel conditions from there. O2 sensors can be a HUGE culprit here since they are not used in open loop. MAF is now working along with MAP and your car is adjusting spark and fuel timing based on these inputs. Getting a test done is the best way to know what is really going on in your car. I would make the jumpers you find in the link above and have advance or autozone read your car if they have the OBDI reader. Knowing the codes will be a big help here.
Massey
#24
Finally found a mechanic that had a reader that would work and didn't charge me for the read. Codes 70-72 I think he said. EGR. Going to do a good cleaning first and see if that fixes it. After that replace the EGR. After that maybe the MAP sensor.
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hotrodpuch
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11-25-2011 10:08 AM
scrawford
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02-05-2010 08:02 PM
1993, 1994, 1995, 1996, 1999, 34, acceleration, backfire, backfiring, camaro, chevy, issues, misfire, sputter, sputtering