Cel help: knock sensor?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GreenMachine11 · 04-25-2017, 08:52 PM

So I got my car tuned yesterday..

Side note: It has basic bolt-ons (CAI, Kooks LT's, Ported TB, Full custom 3" exhaust)

My tuner said the Cel my car was throwing indicated I had a bad or faulty knock sensor. He thought it might have something to do with the type of fuel I use (which I recently started using 100% pure 93 octane) He also thought it could be due to how loud my exhaust is, possibly causing it to trip?? Still pretty confused as to what it could be & a little worried to be quite honest. I've been reading a few posts on here where some LS3 cars with long tubes had melted the sensor wires because they weren't insulated & got too close to the headers 🔥..

Nevertheless, I'm going to be taking it back to my tuner to inspect the knock sensors. I'd rather avoid taking it to the dealer, if y'all get my drift.

Any input would be greatly appreciated!

christianchevell · 04-27-2017, 08:58 AM

SO you got dyno tune or canned tune? one the adjusting the AFR and timing will knock down the timing getting pulled for anti knock KR knock retard...... And yes people have melted things too close to the headers but most lash things out of the way. You may have a exhaust leak causing feed back simulating knock is what I think he may be hinting at, tuning is best done on a dyno with a well experienced motor head who adjusts things properly, on tuning mine..I use HFC, the rear o2s had to be deleted, & have a code deleted for delayed response from the fronts. Myself I would be doubtful of the knock sensors suddenly being bad and more suspicious of the tune etc..........

JerTM · 04-27-2017, 09:55 AM

What is the dtc? That will help us narrow down the cause. A circuit code could be a bad wire, a frequency code could be the sensor, or it picking up knock is pretty much just a knock the tuner didn't tune for correctly.

GreenMachine11 · 04-28-2017, 03:29 PM

Thanks...perhaps I could have an exhaust leak...

The code reader from autozone registered- "P0326- Bank 1 Knock Sensor 1electrical circuit was out of it's operating range or had a performance problem for a predetermined period of time."

04-25-2017, 08:52 PM	#1
GreenMachine11 Drives: 2015 Bright Yellow 2SS 1LE Join Date: Jun 2012 Location: Knoxville, TN Posts: 113	Cel help: knock sensor?? So I got my car tuned yesterday.. Side note: It has basic bolt-ons (CAI, Kooks LT's, Ported TB, Full custom 3" exhaust) My tuner said the Cel my car was throwing indicated I had a bad or faulty knock sensor. He thought it might have something to do with the type of fuel I use (which I recently started using 100% pure 93 octane) He also thought it could be due to how loud my exhaust is, possibly causing it to trip?? Still pretty confused as to what it could be & a little worried to be quite honest. I've been reading a few posts on here where some LS3 cars with long tubes had melted the sensor wires because they weren't insulated & got too close to the headers 🔥.. Nevertheless, I'm going to be taking it back to my tuner to inspect the knock sensors. I'd rather avoid taking it to the dealer, if y'all get my drift. Any input would be greatly appreciated!

04-27-2017, 08:58 AM	#2
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	SO you got dyno tune or canned tune? one the adjusting the AFR and timing will knock down the timing getting pulled for anti knock KR knock retard...... And yes people have melted things too close to the headers but most lash things out of the way. You may have a exhaust leak causing feed back simulating knock is what I think he may be hinting at, tuning is best done on a dyno with a well experienced motor head who adjusts things properly, on tuning mine..I use HFC, the rear o2s had to be deleted, & have a code deleted for delayed response from the fronts. Myself I would be doubtful of the knock sensors suddenly being bad and more suspicious of the tune etc.......... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop Last edited by christianchevell; 04-29-2017 at 09:12 AM.

04-27-2017, 09:55 AM	#3
JerTM Drives: 2011 2SS/RS M6 Join Date: Oct 2015 Location: Utah Posts: 1,940	What is the dtc? That will help us narrow down the cause. A circuit code could be a bad wire, a frequency code could be the sensor, or it picking up knock is pretty much just a knock the tuner didn't tune for correctly.

04-28-2017, 03:29 PM	#4
GreenMachine11 Drives: 2015 Bright Yellow 2SS 1LE Join Date: Jun 2012 Location: Knoxville, TN Posts: 113	Thanks...perhaps I could have an exhaust leak... The code reader from autozone registered- "P0326- Bank 1 Knock Sensor 1electrical circuit was out of it's operating range or had a performance problem for a predetermined period of time."