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 ...

One of the contributing factors to the LS engine's success when it comes to performance and economy can be traced to its DIS (distributorless ignition system). By assigning an individual coil for ...