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Re: 91 c1500 stutter on acceleration
Update: so I checked closed loop operation and is indeed going into closed loop. I also read the voltage on the O2 and it varied between 0-.70. Not sure if this is normal. I then unplugged the O2 and drove for about 20 minutes. Still no cel and the truck ran the same. I double checked ALL grounds based on the wiring diagram as the pin chart was missing a few. Again, all checked out ok. Thoughts?
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