P0030 2002 Nissan Extrra

Asked by Oct 18, 2019 at 11:13 PM about the 2002 Nissan Xterra SE

Question type: Maintenance & Repair

I have a 2002 Nissan Xterra that continiously has P0030 Code. Random
Cylinder Misfire and is totally gutless. Fule consumption is horrendous.

This is an engine I bought off JDM Auto as the original had a cracked Block.

Replaced/Done:
Distributor
Plug Wires Spark Plugs
Fuel Filter
Crankshaft Position Sensor
Timed the engine because it was way off after I pulled the distributor.

My two O2 sensors have totally different voltages - one about 0.8 the other
about 0.05 Battery tests very good New Ground Wires Removed exhaust
after manifold to check for clogged catalytic - no power increase

When i say gutless - it is like 3/4 peddle to get up a small hill

Any Ideas? O2 Sensor

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