3406e stutter

Regarding the soggy paper you found. I found the same thing in my primary filter, truck lost some power and my restriction gage went way up. I my case the paper looked like filter material, my guess is that somewhere I bought fuel the filter on the pump was coming apart.

 

The new style cam sensor for your 1lw is a upgraded one from cat and looks a lot different then your original one. If this is the one you got it is just as simple as taking old one out and putting new one in. Replace the oring on the sensor too. Just put it in snug. Don't torque on it. Very simple.

 

Original one will have one shim....the new style requires two.

 

Forgot one thing. There is a shim under your original sensor , don't use that on your new one. Just screw it in with new oring and your done. !

 

Ive always just discarded the shim, never had a problem. The shims on the original one to preset the gap , don't need to do that on new one.

 

When Cat changed the sensor they call for two shims to set the gap. The cam sensor is a proximity sensor in which the gap changes when it reads. Leaving the shims out will change the timing read by the ecm.

Makes no difference to me how you do it. Just stating what Cat recommends.