Code P1579 on replacement engine...

[JFP in PA]

As the crank position sensor reads from the flywheel, and you have a new aftermarket flywheel, I'd start there. Perhaps you should contact the manufacturer.

[Byron in Atlanta]

Originally Posted by JFP in PA

As the crank position sensor reads from the flywheel, and you have a new aftermarket flywheel, I'd start there. Perhaps you should contact the manufacturer.

This is my worst fear, hate to go back in to the tranny! I was hoping since it was running so well up to 4K that someone might be able to rule out the ring on the flywheel.

[JFP in PA]

The ring is acutally on the back of the crank, near the pilot bearing the nose of the tranny fits into. If the crank sensor checks out OK, the next stop has to be the shutter wheel............

[Byron in Atlanta]

Found the problem....It seems the vendor that I bought the Aasco flywheel from either sent me the wrong unit, or it was damaged in shipping. Either way, here is a pic of the damage it is doing to the Crankshaft Position Sensor. Looks like the shutter wheel teeth are making contact with the sensor. It is gouged pretty good. So out comes the tranny! YEA!

[insite]

don't pull the tranny. try to ID the bad shutter finger through the hole where the crank sensor goes. bend it back in place through the hole.

alternative: shim the crank sensor out a couple of millimeters so it clears the shutter wheel.

FYI, i have an extra crank sensor you can have.