3pedals
Senior Member
Truck is a 2008 ram 4.7 6spd with 420k miles. After being parked for a couple weeks (ran perfect when parked) is now throwing a p2305 “ignition coil 2 - secondary circuit insufficient ionization” code. This misfire only shows up when engine is relatively cold, and after a few miles of driving seems to run perfectly. Swapped coil and plug wire (from coil to lower plug) with another cylinder and no change…same misfire and same code.
Spark plugs are OE/Bosch and only 20k miles old. All 8 original injectors were replaced with new OE/Mopar for other reasons (leaking gas = rising oil level) about 6 months/10k miles ago.
The truck runs as well as it ever has for the most part, except when engine is cold or truck has been parked for a little while (engine oil & coolant still warm, but perhaps other things cooled down). Almost like there needs to be some more heat in the engine compartment for the misfire to disappear.
Any ideas on what to look for next?
Will be taking in to a trusted shop next week if I can’t figure out fairly easily…
Spark plugs are OE/Bosch and only 20k miles old. All 8 original injectors were replaced with new OE/Mopar for other reasons (leaking gas = rising oil level) about 6 months/10k miles ago.
The truck runs as well as it ever has for the most part, except when engine is cold or truck has been parked for a little while (engine oil & coolant still warm, but perhaps other things cooled down). Almost like there needs to be some more heat in the engine compartment for the misfire to disappear.
Any ideas on what to look for next?
Will be taking in to a trusted shop next week if I can’t figure out fairly easily…