STILL throwing knock sensor low input codes
STILL throwing knock sensor low input codes I just replaced the knock sensors on my car because of the two low input codes that were getting thrown. I also checked to make sure the wires weren't crushed, and they aren't. Still throwing the codes. Had them deleted and they came on in minutes. What options do I have here?
cerebrex , if you get this problem corrected , please pm me as I have been fighting this problem 2-3 months, I replaced BOTH KR sesoner, drive 2-4 driving cycles still had problem went back in changed wireing to KR', 2-4 driving cycle same problem , chk BOTH NEW kr' AND WIREING with oms meter, chk good, and chk old krs and wireing, chk good, both old/new chk good ( 97-107 kb )which gm say is good chk wireing to pcm all good , my pcm was replaced new 5 months ago,all pin still look new,all was fine up untill 2-3 months, but only have kr low problem 2-3 nonths, if I find problem will pm u
good luck Johnny
good luck Johnny
Last edited by SS SLP2; Apr 29, 2005 at 07:40 AM.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
check the wire... I was setting a P0327... replaced the front Knock sensor... still setting it... was driving me crazy ...
Finally took the intake manifold back off and found that I had pinched one of the knock wires... so it was shorting out... I replaced the wiring harness that goes from the adapter in back of the intake manifold to the 2 knock sensors... and problem solved
Finally took the intake manifold back off and found that I had pinched one of the knock wires... so it was shorting out... I replaced the wiring harness that goes from the adapter in back of the intake manifold to the 2 knock sensors... and problem solved
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
I never crushed the wires and they are fine. I have no idea what to do. Does anyone have the pin layout for the ECU? I want to check to see if they are burnt or broken. I am about to just get someone with autotap to delete the codes from the system for me. Anyone know how much that would cost from a shop? I'm open to any ideas.
TECH Addict
Joined: Jun 2002
Posts: 2,428
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From: Las Vegas, NV
I had the same problem, both codes, the first time it was a crushed wire, the second time it was burnt knock sensor pins on the PCM.
Look at the BLUE PCM connector:
Pin #11 (light blue wire) Rear KS
Pin #51 (dark blue wire) Front KS
Mainly look for white corrosion on the pins. I touched the pins with pencil and they both broke right off. I got a rebuilt PCM from Wester's Garage that he programmed with my Vin# and flashed the latest GM software.
Look at the BLUE PCM connector:
Pin #11 (light blue wire) Rear KS
Pin #51 (dark blue wire) Front KS
Mainly look for white corrosion on the pins. I touched the pins with pencil and they both broke right off. I got a rebuilt PCM from Wester's Garage that he programmed with my Vin# and flashed the latest GM software.
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TECH Regular
Joined: Aug 2003
Posts: 478
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From: Boca Raton, FL
Hey Horist...I just got my HPT today and I got rid of my rear 02's, AIR and EGR. I went out for a drive an I threw the dreaded P0327. Now...my car is a 2000 and I put a LS6 intake on it a few months back...so I figure that I too must have pinched a wire. Does anyone have a pic or a better description of where this wire is? I don't know where to look. I want to fix this as I'm getting the 4* of KR too! Grrr!
TECH Regular
Joined: Aug 2003
Posts: 478
Likes: 0
From: Boca Raton, FL
Several tries using search....and presto....the answer to my own question!
https://ls1tech.com/forums/showthrea...ensor+location
https://ls1tech.com/forums/showthrea...ensor+location
