Knock Sensors Not Working...But no codes, either!
Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
Knock Sensors Not Working...But no codes, either! Just got done swapping a 2005 LQ4 into my 2002 Camaro. Since the knock sensor connectors were the same, we just left them in and swapped them over.
The car runs great post-swap, but now we're certain the knock sensors are not working, as in the last few days of driving, I've seen zero knock retard on my Torque app, although it does show that the knock data is available in the stream. I scanned for codes and there are no codes at all stored in the PCM and none pending.
Today, the car was tuned at CalSpeed, and in none of the 6 dyno pulls was there even half a degree of knock retard.
Any suggestions on this? We're totally at a loss as to why this is (or isn't) happening.
The car runs great post-swap, but now we're certain the knock sensors are not working, as in the last few days of driving, I've seen zero knock retard on my Torque app, although it does show that the knock data is available in the stream. I scanned for codes and there are no codes at all stored in the PCM and none pending.
Today, the car was tuned at CalSpeed, and in none of the 6 dyno pulls was there even half a degree of knock retard.
Any suggestions on this? We're totally at a loss as to why this is (or isn't) happening.
You will probably get more responses in the PCM tuning section.
The only thing I can think of is the LQ4 detonates at different frequencies than the LS1 and that's why the PCM isn't picking it up.
The only thing I can think of is the LQ4 detonates at different frequencies than the LS1 and that's why the PCM isn't picking it up.
Thread Starter
Joined: Aug 2002
Posts: 2,419
Likes: 6
From: 78°14′46″N 15°27′56″E
I'm totally at a loss here.
The only possibility I can think of that both sensors are bad and failed in a way that the PCM can't detect.
