I keep having a problem with my O2 sensor in my Corolla 1.4 petrol. I have had all 4 coil packs replaced but after a few weeks the o2 sensor light comes on and the engine is misfiring and only runnig ...
Engines need spark plugs to burn their air/fuel mixture, and the spark plugs need a jolt of electricity to do their work. Older cars with conventional distributor-based ignition systems did it by ...
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