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Equinox 2012 2.4L code P228D

  • mattypark9
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11 months 2 weeks ago #67095 by mattypark9
Equinox 2012 2.4L code P228D was created by mattypark9
i already changed the timing chain, after awhile the code came up P228D and P0420. i had done some research. do not want to throw parts in. i will start to change the least cost ( low pressure regulator (sensor) on the drier side. took out the high pressure fuel pump. seem good, the spring are ok. the roller attached to the pump is still good. need  help please??

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