Question: Which Sensor should I replace?
My car was hard to start for awhile. It is better now but the Engine Dummy Light comes on occasionally, and I do have a small drip of Oil from the back of the Engine. Due to the placement of the engine attachments I can't view the drip source. I replaced the Fuel Filter, and one Sensor on the air Intake section and that helped. I thought it was the colder weather, but it's not that. The Code reader says everything's fine, but think a Sensor will fail soon. The car has almost 140,000 miles on it and is excellent condition. There is some Valve noise. Does anyone have an idea which Sensor will fail?
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