Both sensors, and their circuits, are monitored by the PCM continuously. If either one fails, even momentarily, a DTC will be set in memory and the SES light will turn on. If there are no CKP or CMP DTC's in memory, the chances are slim and none that there's a problem with either one, or their circuits. If the only DTC you have is P0300, have camshaft retard checked/adjusted and see how the engine performs.

 

did the cam shaft sensor, trucks runs better, still has light. ive noticed if i get onto the truck gettin up to 55 it doesnt flash, if i got slow accerlation it does flash

the is what the old sensor looked like when I pulled it

 

Well, after talking to the previous owner. He put in ac-plugs, wires, cap, rotor, ignition coil, spiders, and everything in the fuel system including the pressure regulator. Only thing he didn't do was replace the distrb. Also the motor that he put into the truck was out of a safari, he did put in the wiring harnace and everything to go with it. So long story short, I'm still extremely baffled as to what to do next with my truck.

 

Pull the distributor and check the gear for wear.

 

gear has already been replaced, if you read back in this thread, I have replaced plugs, wires, cap, rotor, distrb gear, camshaft sensor. And the previous owner did all that plus the spiders, coil, and the whole fuel system.

 

Some reading for you:
http://www.aa1car.com/random-misfire/

Video of ScannerDanner ASE tech:
http://www.youtube.com/user/ScannerD...os?query=p0300

 

Pulled the maf last week while it was running, just about shut the truck off. So the maf is good

 

Another way of checking the MAF is to look for a MAF DTC in memory. No SES light & no DTC? MAF is OK. A faulty MAF will not cause P0300.
Excessively worn distributor bushings will cause the gear to wear and cause a P0300. If you use a scan tool that is capable of displaying secondary ignition in a "roster" format, it sticks out like a sore thumb! If that's the problem, after you replace the distributor, make sure you adjust camshaft retard.

 

thats about the only thing im starting to think it may be is the distrib, thats about the only thing I havent replaced or the previous owner did as well. the gear has been already, and the distrb looks to be good

 

You can't tell if it's good by looking at it, unless the shaft is wobbling so bad that the rotor contcts the distributor cap. By that time, when you remove it to replace the gear, you'd certainly notice the shaft wobbling in the housing. The point here, is P0300 will set long before you can see the problem without the proper test equipment.

Also see the 3rd paragraph in post #4.