Rough Idling/Misfiring Issues
Hey guys!
This is seriously stumping me, probably something inside the engine, but here it goes:
2005 Ford Ranger Edge 2WD 3.0
Randomly getting P0174 (about 3-4 times a week), P0304 (maybe once a week), and P0316 (always occurs along with P0304).
Only real problem is stumbling and missing at idle.
When I get on the gas, it drives smooth as can be, and decently quick, there are no engine performance issues.
Things I have replaced to try and remedy the problem:
- Spark plugs (all 6 with Bosch Double Iridium)
- Spark plug wires (all 6 with Duralast (I know, but needed em))
- Ignition Coil (Motorcraft)
- Oxygen sensors (all 3 with Bosch)
- Fuel filter (Motorcraft)
- Fuel pump (Carter)
- Fuel injectors (Motorcraft)
I have also cleaned the MAF sensor, IAC valve, and throttle body.
I even sealed the seam of my intake tube.
Have checked for leaks and cut hoses, with nothing found or heard.
I am now suspecting burned exhaust valve or something isolated to that cylinder. I just don’t know if that would also cause the Lean condition (P0174)
Any insight as to what may be causing this would be awesome. I am mostly curious if I'm looking at 2 different issues, or one is causing the other, but I would think a lean condition would cause multiple misfires.
Thanks!
- Anthony
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2005 Ranger Edge 2wd Supercab 3.0 Auto
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