So..... Drove it today on two 30 mile trips and no issues have come up. I guess the gremlins are on vacation..... Still left the shim on the crank sensor.

 

I would remove the shim. It's very likely the issue was the connection at the PCM, far more likely that helped than moving the crank sensor away from the reluctor. Would be interesting to see if the crank sensor shimming is what helped, but I can't see how it would. You would be surprised how many cars I've fixed by unplugging and replugging a connector. Bad connections aren't all that uncommon. Especially on a near 20 year old vehicle.

But I am glad to hear it's doing good.

 

I just put the pcm back in its holder and will take it out for a longer ride tomorrow and see how it does. Ill try it without the shim if it starts acting up again.

 

To me the shim would weaken the signal from the reluctor, and the way the reluctor is mounted, it would be impossible for it to be off center.

 

Keep an eye out for an oil leak, with the shim the sensor is pulled back out of the engine some which means the seal is also.

 

Yeah, that crossed my mind also. ill be looking out for that.

 

Drove it again today for a while..... no crank sensor code nor did the tach act up but it did throw the P0300 flashing light a couple of times.... i think that is in the tune. Im gonna swap out the fuel pump sometime this month and go retune.