I have replace the vvt valve after having received an 0028 code on my 2010 Subaru Forester, naturally aspirated. The problem still exists ie; no power, poor shifting response (at) , erratic rpms. I had previously replace the catalytic converter. Where might I look for more problems . The voltage at the vvt valve harness is 6.16. Should it be around 12 or so? How do I run that down if that is an issue?
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