Car will not run properly have to unplug VANOS to get it to stop misfiring. This is a steady misfire on cylinder 2 and multiple misfires on 1 and 3. P0300 and P0302. All new spark plugs, coils, new cam sensors and VANOS solenoids. Checked wiring ok. This is a brand new cylinder head. Timing chain is original did not replace but did replace chain tensioner. Installed with a local mechanic. If I unplug either VANOS sensor car runs fine expect when cold start. Could this happen if the timing chain was off and the adjustment is outside sensor range?
My car has 69000 miles.
My car has an automatic transmission.
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