I have a 97 sunfire with a 2.4 I recently put an rksport 4-2-1 header on my car and now I have a low input to cam sensor code p0342. I checked power & ground and they are both good. Is there anything else I should check before I change the sensor. Also for the past two years I have been dealing with a n intermitten miss & I have changed everything but the fpr and the cam & crank sensors. It also so has been really jerky for the last 6 monthes & I read that this is your cam sensor going out. Any info would be great