Full throttle at start up

2003 - 2500 with a 5.7 hemi This morning when I started my truck it when to full throttle and then backfired and like pulses up and down on idle. Code reader says O2 sensor dead short. Anyone ever hear of this??

2003 - 2500 with a 5.7 hemi
This morning when I started my truck it when to full throttle and then backfired and like pulses up and down on idle. Code reader says O2 sensor dead short. Anyone ever hear of this??

Wed, 30 Dec 2020 22:14:31 +0000
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