EM1 reving issues
 

Hey, my 2000 EM1 cant rev pass 3500rpm, I hooked it up to the computer and it had 2 codes, crank senor and catalytic converter. I replaced the crank senor and I am still having the same issue and the computer tells me the same codes. I haven't replaced the cat yet because I figured that it wasn't going to fix the issue. I tried another ECU hoping that would fix it but it didn't and now I am stuck.

Any ideas what it could be?

The crank sensor should be a hall sensor.. have you tried to diagnose the 2 sensors with a scope? to eliminate the fault there?

Chances it is in limp mode hence you can't crank higher.