My LT4 Knock Module is junk...WTF
07-17-2007, 12:38 PM
#1
My LT4 Knock Module is junk...WTF Okay, still tracking down my knock retard issues.
I have been running the LT4 KM for years and never had an issue with KR on my old all bolt-on LT1.
On my current engine (see sig) the KR is wildly out of control all across the board. It averages 4-5 degress all the time.
For the fun of it I re-installed my original LT1 KM and the KR is totally gone across the board except for high RPM WOT, then it goes to 5 degrees retard. It is totally obvious that either my LT1 KM just works better or my LT4 KM must be fried and gives false readings galore.
Anybody ever have an LT4 KM go bad?
Anybody ever have their LT1 KM work better than the LT4?
I have been running the LT4 KM for years and never had an issue with KR on my old all bolt-on LT1.
On my current engine (see sig) the KR is wildly out of control all across the board. It averages 4-5 degress all the time.
For the fun of it I re-installed my original LT1 KM and the KR is totally gone across the board except for high RPM WOT, then it goes to 5 degrees retard. It is totally obvious that either my LT1 KM just works better or my LT4 KM must be fried and gives false readings galore.
Anybody ever have an LT4 KM go bad?
Anybody ever have their LT1 KM work better than the LT4?
07-17-2007, 01:44 PM
#2
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hmm, have you had a tune with your PCM? I see you have a madz28 tune, has your timing been changed? check with the tuner to see if this is being caused because of your tune. I remember hearing something about PCM tunes with the knock modules. Anyway, keep us updated, I just got my lt4 KM and am waiting for my car to get back from the shop to put it in. Ill chime in when i get mine in...
07-17-2007, 03:03 PM
#3
Originally Posted by Lt14mla
hmm, have you had a tune with your PCM? I see you have a madz28 tune, has your timing been changed? check with the tuner to see if this is being caused because of your tune. I remember hearing something about PCM tunes with the knock modules. Anyway, keep us updated, I just got my lt4 KM and am waiting for my car to get back from the shop to put it in. Ill chime in when i get mine in...
Last edited by wrd1972; 07-20-2007 at 03:26 AM.
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07-20-2007, 01:09 PM
#9
Hmm I think to test the knock sensor all you have to do is test its resistance reading. Don't remember what its supposed to be, but all electrical parts CAN fail. Hell out of the box, NAPA sold me a shitty knock sensor, drove me nuts why I couldn't get a code 43 or whatever I had to go away. Well that new knock sensor I had installed was faulty.
