I'm not getting a check engine light, but every now and then my car doesn't want to start and I have to turn it off and crank it a couple times and usually the tach doesn't work, and then after a while it comes back. Sometimes when driving the tach will bounce and the car will buck with any throttle touch. I think its the cam sensor, but I don't have a CEL so I'm not positive. Sound like a cam sensor to you guys?