The 1336 will stay until the PCM is able to successfully do a relearn. Sounds like you're doing the relearn correctly. With engine up to temp and idling, slap it to the floor and release when the rev limiter cuts it out. Ask if the car has been anywhere to have had the PCM reprogrammed or replaced. If a new CKP had been installed, the PCM would still be using the original learn and would have no idea it had been replaced. For a PCM to generate that DTC out of the blue, that makes a pretty strong case for a faulty PCM. The down stream O2 DTC would have no effect on the CKP learn.
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Today's Featured Article - The David Brown Rose Badge - by Samuel Kennedy. In the 13th century civil war was raging in England. Two English noblemen were involved in a conflict which became known as the War of the Roses. The Duke of York had as his emblem a white rose and the Earl of Lancaster had a red rose. Today the white rose is the official emblem of the county of Yorkshire and the red rose has been adopted by the neighboring county of Lancashire.
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