Quote Originally Posted by tayto View Post
pretty sure 7060 and 7427 share the same knock sensor, but it's an easy check to do with DMM.
Yep, you're correct, they are. I tested resistance on both, old one was around 100K ohms which AFAIK is right within spec, but the new one was only testing around 2K. So I swapped them and am running the old now. But I'm still having the same problem with the flag setting within 30 seconds, engine running or not. I'm wondering if the low resistance could have killed the memcal or something in the PCM?