Welcome Visitor! Please take a few seconds and Sorry to hear about the head gasket. My 2000 had leaking exhaust valves and leaking head gaskets. I was getting lean codes and not misfire codes even though I had cylinders completely dead.
I paid $300 for a set of new heads with hardened valve seats. Probably about $600 total to do the whole job myself just in parts when you start to add in new coolant, oil, oil filter, gasket kit, head bolts, tons of degreaser and brakes parts cleaner, rags, gloves, etc, etc...........
I went down the whole same road of injectors, plugs, wires, coil pack and everything else trying to convince myself it wasn't the heads that was causing a miss/stumble at low RPM and the lean codes.
A dead cylinder will not burn oxygen, so you have extra oxygen in the exhaust and that's what gives the lean code. The O2 sensors don't see the extra fuel, just the extra oxygen.
I paid $300 for a set of new heads with hardened valve seats. Probably about $600 total to do the whole job myself just in parts when you start to add in new coolant, oil, oil filter, gasket kit, head bolts, tons of degreaser and brakes parts cleaner, rags, gloves, etc, etc...........
I went down the whole same road of injectors, plugs, wires, coil pack and everything else trying to convince myself it wasn't the heads that was causing a miss/stumble at low RPM and the lean codes.
A dead cylinder will not burn oxygen, so you have extra oxygen in the exhaust and that's what gives the lean code. The O2 sensors don't see the extra fuel, just the extra oxygen.
