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My engine started running rough and lost some power(automatice would downshift more frequently)after I hit a huge pothole. I got a 2-1-4 (faulty RPM sensor) code. I replaced the RPM sensor in bellhousing but the engine still ran rough and still had irregular exhaust note after replacing the RPM sensor.
I also checked all the Bosch Platinum 4 spark plugs and they were burning the same medium grey color.
I then checked the timing belt to find it had jumped a couple teeth. Would this cause the engine to run rough and lack power?
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