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Your 1999 f-150 with a 42 is spark knocking disealing bad even at 55 miles per hour what is the most likely cause and how can you stop it?
Wiki User
∙ 14y ago
If it is doing it every once in awhile, then you might have the same problem I did. Ford has a very big problem with the Cam sensor, and the Synchronizer. With mine, the synchronizer did something, and broke the Camshaft positioning sensor. How it ran I have no clue, but it would start knocking and studdering. It would come and go, but never lasted long. Do not go to Ford for the part. It is over $200.00, and they want $200.00 for the tool you have to have to time it. I went to a National Auto Parts A. store, and got everything for $47.00, and it came with the Cam positioning sensor, the Synchronizer, and the tool needed to set the timing of it. I hope this helps, good luck.
Wiki User
∙ 14y ago
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