cam sensor
i have z28 2002 35th and it is bolts on ( headers and cat back ).
i have problem with RPM gauge it is always zero while the car is running and check engine is on . i check it and every thing is ok ( cam sensor, computer,feuse also the wires ) all of the is ok but computer check always said cam sensor problem so, what is the problem ?


.. it was the camshaft need to be replaced