02 P5 Help

[KawaFord]

Hey all.

I'm having some problems with my GF's 2002 Protege5.

It's throwing 2 codes, Bank 1 To Lean, and Cylinder 1 Missfire.

I already changed all plugs, and I changed the upstream O2 Sensor.


I'm thinking the coil packs are bad, anyone have any input?

 

[slavrenz]

Replace the coil packs

 

[i12drivemyMP5]

Damn, skipped right over the plug wires and went right to the o2 sensor? I would do plugs, wires, coils then o2sensor. Go in order of cost, lol. But yeah, you got wires and coils before heading into crapitznottheeasystuffland.........also check for cracks in the rubber accordian intake tube? Not sure that would cause misfire codes. Misfire codes usually plug/wire/coil thing.

 

[slavrenz]

Damn, skipped right over the plug wires and went right to the o2 sensor? I would do plugs, wires, coils then o2sensor. Go in order of cost, lol. But yeah, you got wires and coils before heading into crapitznottheeasystuffland.........also check for cracks in the rubber accordian intake tube? Not sure that would cause misfire codes. Misfire codes usually plug/wire/coil thing.

+1 on all counts

 

[ScratchNSniff]

I have plugs/wires for cheap if you end up needing them...just shoot me a PM...