- Dec 12, 2019
hey everyone. i am new to this site but i seem to find it very helpful/useful/. here is my problem with my 02 civic. i have these codes for Cyl 2.3.4 misfiring and i cant seem to find the problems. these are the codes. (P1505) Temporary DTC Pcv Air Leakage/ P0113 Permanent DTC IAT Sensor High Voltage/ P0302 Cyl#2 Permanent misfire/P0303 Cyl#3 Permanent/P0304 Cyl#4 Permanent. i changed Sparks plugs with the Dealers type which cost me over a $100 and still did not solve the problem. New coil packs ,its the same issues. New fuel filters, its the same. i bought a set of remanufactured on amazon, put them in and was having misfire on Cyl 2 only and then a few days after i started having the same problems. sprayed non flammable parts cleaner all over the vacuum areas including the brake booster hose and the intake manifold and the engine did not make any changes as if it would suck in any of the liquid.. Anyone with right solution for my problem please,you you are welcome to my problem.