code 1399 with good wires plugs and cap rotor all replaced #2 cylinder sets off code is this a valve adjustment problem?
Oct 18, 2012 at 5:56 PM
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KHLOW2008
✓Experienced Mechanic
41,812 POSTS
P1399 is a temporary code set when misfires are detected. It could be valve adjustment, which would result in erratic idling or it could be the fuel injector.