Having problems with your Hyundai Motor 2004 Sonata ?
What makes a camshaft position sensor go bad, are there any warning signs that it is going bad, How hard is it to replace?
Usually something in the wiring inside the sensor goes bad. Not usually any signs, they just seem to go out randomly. Not sure how hard they are on the hyundai's, but it should be somewhere on the valve cover.
Repair Help & Product Troubleshooting for Hyundai Motor 2004 Sonata
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