Intermittent rough idle/misfire, codes P0152, P0152, P0300 and P1129

Tiny
BBEISMANN
  • MEMBER
  • 2010 DODGE JOURNEY
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 112,000 MILES
Hello. A couple of weeks ago, the engine light went on. Ran a little rough for a couple miles. The code was P0152. Replaced the O2 sensor before the catalytic converter. Problem kept happening. I would then get the p0152 code and a p0300 code. Same thing happens. It usually happens after initial startup or if I let it sit and Idle. Now I also had a p1129 code pop up. When the car does this, it is as though it is misfiring and then it feels like no power and the vehicle will begin shaking. Then just as soon as it comes on, it goes away and it runs perfectly. Like new. Then it will drive forever without an incident. Seems to happen more on startup and sometimes if I am stopped at a light or something, it may come back for a couple minutes then goes away again. It is front wheel drive. Thanks
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Friday, July 31st, 2020 AT 2:32 PM

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Tiny
KEN
  • ADMIN
Code P0152: Bank 2 Sensor 1 oxygen sensor has an abnormally high voltage reading which is common when the engine has a misfire. Lets start by removing the spark plugs to check their condition. This guide can help us get started:

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please take note on which plugs are in what cylinder. You are looking for the one that is different from the rest please upload a picture of the spark plugs as well so I can see what's going on.
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Sunday, August 2nd, 2020 AT 11:09 AM

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