nicksdodge
Junior Member
so shortly after i got my truck it keep throwing me P0300 random misfires. mostly cold start and after i back up and then put it back in drive and take off it will misfire.... but i changed all the boots on my coil packs and got new spark plugs and a new pcv valve and added breathers on my ccv ventilation system. and when i let it warm up it won’t do it and it hasn’t happened for like a month but just recently it happen like three days in a row. and the cel comes on and blinks and turns off. i check for codes by turning the truck off and turn the key three time with out completely starting the truck. and the code pops up on the dash. so today i pulled the plugs to check them they all seem fine and dry with normal ware on them... and moved the four older coil packs to the front and the new ones to the back. pulled and clears the pcv hose just in case it was clogged because i have slight blow by in my oil fill cap. but my oils super clear and clean. not loosing coolant and im just trying to track down these misfires. any ideas? has anyone had this happen to them?
