what can cause random misfire
i've been getting them for 6 months but it's worse now. The car keeps going in limp mode
so i turn off the key and restart it .It's ok on the highway unless i slow down,seems to be
when the rpm goes down.I changed all 4 coils, 4 plugs,4 fuel injectors and both 02
sensors.The valves have been adjusted.Any idea