I have a 1999 Sahara 6cyl and I intermittently have the check engine light come on and code reads "Cylinder 1 misfire". When this happens the engine runs a tad rough, but not very bad. The rough idle passes and the code can be cleared usually within a hour. Engine runs very smooth and I have great throttle response.I have replaced the plugs, wires, cap, and even put in upgraded fuel injectors (Precision Injectors), but I still get the code 2 or 3 times a month, Is it the cam/crank shaft sensor??? If it was a cylinder issue is would not be intermittent...right?
In advance, your input and assistance is appreciated!