Hello,
So my P0171 engine code had popped up the other day. Ran a can of royal purple and engine code went away after the tankful of gas but unfortunately came back. Then my car started stuttering when engine is on load in 2nd and 3rd gear which seemed like an ignition problem. I changed the spark plugs and coil packs and it cured the stuttering and the engine code went away without any manual clearance of the code. After about a hundred miles it came back. What's going on!?
I searched and they said it could be a vacuum leak, MAP sensor, ignition issue, O2 sensor, fuel cap issue.. But I was wondering with my scenario is there anyway of narrowing it down? Thanks.
So my P0171 engine code had popped up the other day. Ran a can of royal purple and engine code went away after the tankful of gas but unfortunately came back. Then my car started stuttering when engine is on load in 2nd and 3rd gear which seemed like an ignition problem. I changed the spark plugs and coil packs and it cured the stuttering and the engine code went away without any manual clearance of the code. After about a hundred miles it came back. What's going on!?
I searched and they said it could be a vacuum leak, MAP sensor, ignition issue, O2 sensor, fuel cap issue.. But I was wondering with my scenario is there anyway of narrowing it down? Thanks.