Idling issue on 2003 Dodge Ram 1500 5.7


Asked by Aug 14, 2016 at 03:16 PM about the 2003 Dodge Ram 1500

Question type: Maintenance & Repair

I have a 2003 dodge ram 1500 5.7 with a
Hemi. 161400 miles on it. Its been taken
care of its whole life. I got it 2 weeks ago
from my brother in law and last week it
started acting up. Revving while at stop
lights. Stalled twice. Thought maybe had
bad gas. So I drove it to E and put better gas
in it. No change. The check engine light
came on and I took it in and it told me bad
02 sensor.
It was idling fine before I changed both 02
sensors. Would only jump when I was in
reverse or drive. Now it's opposite and now
jumps in park and neutral. Also when at I'm
at stop lights, turning etc.
When I took it to get the check engine light
codes it was saying downstream 02 sensor.
Replaced that and it was fine. Bout 15
minutes later light came on took it back up
code read upstream 02 sensor. Changed
that ran fine yesterday. This afternoon the
jumping started again and switched from
doing it in R and D to P and N.
I then took off the mass air flow pipe and
cleaned that, with no change. Can anyone
help with ideas? My brain is exhausted.

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