P0327 causes KR?
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From: Boca Raton, FL
P0327 causes KR? UPDATED!!!!! I'm throwing the dreaded P0327. Now...my car is a 2000 LTs, lid, home ported TB and I put a LS6 intake on it a few months back...so I figure that I too must have pinched a wire when I installed the intaked. So I've been scanning and everytime I really get on the car....it eventually starts throwing 4 KR.
I went and reset the LTFTs and I have that table b/t -4 and 0 now...which is good. So..I went in and backed off the timing wherever I'm throwing KR at. So...I've done this repeatedly....and now I've got my timing down into the teens. I'm getting KR anywhere from 1800 to 6000 RPMs when I floor it. I know this can't be right.....I know the car should be in the 27-28 timing range.
So my question is...if you are throwing the P0327 code.....is it totally pointless to try to tune out the KR that shows up? Does the P0327 code need to be fixed first?
If the code doesn't affect KR....then could there be something else that is causing the KR? Maybe something loose banging on the engine. I noticed my oil level dip stick is loose, and I've got FRC off a vette on there....could these be banging? Maybe something else?
I figure I'll just order a new KR wiring harness on Monday to hopefully take care of the code. Does anyone know what the part number is for the harness?
Thanks!
I went and reset the LTFTs and I have that table b/t -4 and 0 now...which is good. So..I went in and backed off the timing wherever I'm throwing KR at. So...I've done this repeatedly....and now I've got my timing down into the teens. I'm getting KR anywhere from 1800 to 6000 RPMs when I floor it. I know this can't be right.....I know the car should be in the 27-28 timing range.
So my question is...if you are throwing the P0327 code.....is it totally pointless to try to tune out the KR that shows up? Does the P0327 code need to be fixed first?
If the code doesn't affect KR....then could there be something else that is causing the KR? Maybe something loose banging on the engine. I noticed my oil level dip stick is loose, and I've got FRC off a vette on there....could these be banging? Maybe something else?
I figure I'll just order a new KR wiring harness on Monday to hopefully take care of the code. Does anyone know what the part number is for the harness?
Thanks!
Last edited by 2000WS6Vert; May 18, 2005 at 07:59 PM.
Originally Posted by 2000WS6Vert
I'm throwing the dreaded P0327. Now...my car is a 2000 LTs, lid, home ported TB and I put a LS6 intake on it a few months back...so I figure that I too must have pinched a wire when I installed the intaked. So I've been scanning and everytime I really get on the car....it eventually starts throwing 4 KR.
I went and reset the LTFTs and I have that table b/t -4 and 0 now...which is good. So..I went in and backed off the timing wherever I'm throwing KR at. So...I've done this repeatedly....and now I've got my timing down into the teens. I'm getting KR anywhere from 1800 to 6000 RPMs when I floor it. I know this can't be right.....I know the car should be in the 27-28 timing range.
So my question is...if you are throwing the P0327 code.....is it totally pointless to try to tune out the KR that shows up? Does the P0327 code need to be fixed first?
If the code doesn't affect KR....then could there be something else that is causing the KR? Maybe something loose banging on the engine. I noticed my oil level dip stick is loose, and I've got FRC off a vette on there....could these be banging? Maybe something else?
I figure I'll just order a new KR wiring harness on Monday to hopefully take care of the code. Does anyone know what the part number is for the harness?
Thanks!
I went and reset the LTFTs and I have that table b/t -4 and 0 now...which is good. So..I went in and backed off the timing wherever I'm throwing KR at. So...I've done this repeatedly....and now I've got my timing down into the teens. I'm getting KR anywhere from 1800 to 6000 RPMs when I floor it. I know this can't be right.....I know the car should be in the 27-28 timing range.
So my question is...if you are throwing the P0327 code.....is it totally pointless to try to tune out the KR that shows up? Does the P0327 code need to be fixed first?
If the code doesn't affect KR....then could there be something else that is causing the KR? Maybe something loose banging on the engine. I noticed my oil level dip stick is loose, and I've got FRC off a vette on there....could these be banging? Maybe something else?
I figure I'll just order a new KR wiring harness on Monday to hopefully take care of the code. Does anyone know what the part number is for the harness?
Thanks!
Thread Starter
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From: Boca Raton, FL
Originally Posted by txhorns281
Yes, you need to fix whatever is the problem with your knock sensor before the PCM will allow you to run normal timing.
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If you had pinched the wire you would throw both codes, P0327 and P0332. Think about it, if the wire is pinched, the signal from both sensors would be cut off. If you're throwing the one code (P0327), it's most likely a bad knock sensor. With that being said, I would replace both sensors and the wire anyway.
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From: Boca Raton, FL
I just called a local GM parts store. The Knock Sensor wire is part # 1257-5869 and retails at $51.02. Doesn't this sound a bit high?
Edit: I just ordered it through SDPC for $33.52. I knew there was a reason why I don't go to dealerships anymore.
Edit: I just ordered it through SDPC for $33.52. I knew there was a reason why I don't go to dealerships anymore.
Last edited by 2000WS6Vert; May 16, 2005 at 10:18 AM. Reason: Added on
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I'm pretty sure that P0327 is the front knock sensor, but when you pull the intake you'll probably find a rusty puddle of water around the malfuctioning sensor.
I see you have the part number for the harness, but if you want the KS part number let me know and I'll find it for you.
I see you have the part number for the harness, but if you want the KS part number let me know and I'll find it for you.
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I decided to take my chances on installing just the harness. I'll make sure to dremel a channel on the bottom of my LS6 intake this time.
Just in case I need it...and for the help of others....could you post the knock sensor part number.
Just in case I need it...and for the help of others....could you post the knock sensor part number.
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Verdad Gallardo TECH Addict
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From: Las Vegas, NV
If you're throwing one code you have a bad knock sensor. How you know you have a bad harness is when you throw both codes. It would suck for you to take everything apart, replace just the harness, and then have the code reappear with at least 4* of knock retard.
KS part# 10456603
Get the sensors too dude.
KS part# 10456603
Get the sensors too dude.
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From: Lake Zurich, IL
P0327 is the front sensor... but you can set only 1 code w/a pinched wire... I somehow did it heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
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Originally Posted by horist
P0327 is the front sensor... but you can set only 1 code w/a pinched wire... I somehow did it heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
Thread Starter
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From: Boca Raton, FL
Originally Posted by horist
P0327 is the front sensor... but you can set only 1 code w/a pinched wire... I somehow did it heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
I pinched the KS harness between the lifter valley cover (LS6 PCV swap) and block... only pinched a small amount though... but was only causing P0327
Problem is when you set this code, the PCM sets 4* of constant knock, and drops to the low octane tables... so you get like 15* advance at WOT heh
Thanks for the part number...I may just go ahead and get one anyways....since I'm there. LOL
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You're not gonna be sure what the cause is until you pull the intake. For example, you could have gotten the sensor wet, even a long time ago, and it's finally corroded enough under there to short the sensor. Who knows? If you haven't done the GM KS TSB (making a silcone dam and removing the foam under the intake) now would be a good time to do it. You'll most likely have to it any way, and if you don't do it now you'll have to pull the intake again. Chances are your sensors are at least partially corroded.
Whatever you do, good luck!!!!
Whatever you do, good luck!!!!
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I just got an email from SDPC....the wiring harness is on backorder through GM. Doh!
This may take awhile. I think I'm going to tear it all apart tonight and see if I can figure out if it's the wire. What can I say...I'm growing impatient! LOL
This may take awhile. I think I'm going to tear it all apart tonight and see if I can figure out if it's the wire. What can I say...I'm growing impatient! LOL
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From: Lake Zurich, IL
when I ordered my wiring harness I went through gmpartsdirect and it was backordered there too... guess it's not a normal stock part ...
I may have one I can sell if it turns out you need it... I think I ordered 2 by mistake (thinking I needed 1 per knock sensor instead of 1 for both)
I'll check tonight
I may have one I can sell if it turns out you need it... I think I ordered 2 by mistake (thinking I needed 1 per knock sensor instead of 1 for both)
I'll check tonight
Thread Starter
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From: Boca Raton, FL
Originally Posted by horist
when I ordered my wiring harness I went through gmpartsdirect and it was backordered there too... guess it's not a normal stock part ...
I may have one I can sell if it turns out you need it... I think I ordered 2 by mistake (thinking I needed 1 per knock sensor instead of 1 for both)
I'll check tonight
I may have one I can sell if it turns out you need it... I think I ordered 2 by mistake (thinking I needed 1 per knock sensor instead of 1 for both)
I'll check tonight