WJ- Grand Cherokee (1999-2004)
This is a lengthy one so please bare with me..
Few months ago I thought I blew a rod so I was prepping to pull the engine and see what the damage was. Turns out I didn’t blow a rod. But I did have multiple codes:
P0161
P0455
P0308
P0523
I bought a new gas cap, and replaced all 8 spark plugs...