maxima runs rough & stalls since rear main replaced

[proimport17]

I have a 2000 Maxima that I just replaced the rear main seal in and now when I crank it it runs rough and stalls. I can richen it with propane and it runs fine so I know it's lean. I put a noid light on the injectors and they are all firing properly. I have rechecked all of the connectors that I had apart and they are fine. I had been told that sometimes when you remove the trans you may get a bad ground between the engine and bell housing when you reassemble it so I took it back apart and sanded both but with no improvement. Please let me know if you have any suggestions. Thanks in advance.

[maxhopper]

Check your crank sensor by the front of the bell housing. Make sure it is not covered with debris, and that it has a solid connection. Also (not 100% sure of location on 5th gen, but for 4th gen), check to make sure the ground wire coming from the driver side strut tower is connected to the transmission.

[proimport17]

We took the ground cable off and cleaned the mating surfaces. I'm going to recheck the crank sensor but would the car even start without a signal from it?

[maxhopper]

If that checks out, I would look at the MAF.

[proimport17]

I tryed a maf off of another car with no difference. That was what it seemed like to me too but I keep coming back to the fact that it ran fine until I removed the transmission. This thing is eating my lunch. Thanks again.