Engine Knock in 6th Gear - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jethrobandit · 04-01-2019, 10:02 AM

I'm chasing an issue I can't seem to figure out. When cruising on the highway, dropping it into 6th gear I get engine knock when I try to accelerate. Usually that's between 1800-2200 RPM in 6th trying to accelerate. That is the ONLY time I get any kind of knocking in the engine. I've only ever put in 93 and have pulled the fuses a few different times to ensure its reset.

I have a BTR stage 3, LT, cold air, catch can, and of course a tune to go with the cam and LT install. I'd take it back to the guy that tuned it, but he went out of business (not for bad work... but that sucks). I've also tried octane booster in a couple tanks, but doesn't seem to help. Has a strong MAF according to the codes and have cleaned it.

Not sure what else to try other than finding another tech who can check the tune and potentially update it. Just not many options in my neck of the woods.

Nb1081 · 04-01-2019, 01:40 PM

does noise go away when u push clutch in in 6th gear

jethrobandit · 04-01-2019, 05:22 PM

Yes. And it isn't there when holding a speed (65-75) at 1800-2200 RPM. It only happens when I try to accelerate from that range in 6th. Accelerating from that RPM range in 5th or lower, it doesn't happen.

To me it's always sounded like knock from bad gas or something. But, I've never put in below 93 and have tried other steps to try and fix it. Only has 42k miles on it.

gtstorey · 04-02-2019, 07:30 AM

Quote:

Originally Posted by jethrobandit

Just not many options in my neck of the woods.

I've heard good things about DBR Performance in Spring Hill.

Nb1081 · 04-02-2019, 07:30 AM

Its not your motor its your tranny might b able to save rest of it if you get it fixed right away and till then leave it out of 6th you now have a 5 spd. Now this is just my opinion on what you have said your issues are i would also if your not sure try n get on lift and run through gears to 6th and look and listen, but seeing as its only in 6th im going with tranny

jethrobandit · 04-02-2019, 10:57 AM

Quote:

Originally Posted by gtstorey

I've heard good things about DBR Performance in Spring Hill.

I have too, just hard to find a good time to get down there and ask questions. It's over an hour away. But may have to do it just to get it retuned.

jethrobandit · 04-02-2019, 10:59 AM

Quote:

Originally Posted by Nb1081

Its not your motor its your tranny might b able to save rest of it if you get it fixed right away and till then leave it out of 6th you now have a 5 spd. Now this is just my opinion on what you have said your issues are i would also if your not sure try n get on lift and run through gears to 6th and look and listen, but seeing as its only in 6th im going with tranny

Thanks. Not something I would have considered an issue to this point. Hoping I don't have move that ahead of all my other performance upgrade stages.

1LEric · 04-02-2019, 05:50 PM

Try downshifting for your engines sake . You are lugging the engine.

jethrobandit · 04-05-2019, 08:30 AM

Quote:

Originally Posted by 1LEric

Try downshifting for your engines sake . You are lugging the engine.

I'm talking about doing 70-80 MPH on the highway in 6th and barely pushing the pedal to accelerate 2-3 MPH to pass someone on the left. Or even having it on cruise control at those speeds and going up a hill. Those are not scenarios for downshifting.

xc_SS/RS · 04-05-2019, 09:04 AM

Can you datalog and or tune it yourself?

04-01-2019, 10:02 AM	#1
jethrobandit Drives: 2013 Black 2SS Join Date: Feb 2013 Location: Hendersonville, TN Posts: 77	Engine Knock in 6th Gear I'm chasing an issue I can't seem to figure out. When cruising on the highway, dropping it into 6th gear I get engine knock when I try to accelerate. Usually that's between 1800-2200 RPM in 6th trying to accelerate. That is the ONLY time I get any kind of knocking in the engine. I've only ever put in 93 and have pulled the fuses a few different times to ensure its reset. I have a BTR stage 3, LT, cold air, catch can, and of course a tune to go with the cam and LT install. I'd take it back to the guy that tuned it, but he went out of business (not for bad work... but that sucks). I've also tried octane booster in a couple tanks, but doesn't seem to help. Has a strong MAF according to the codes and have cleaned it. Not sure what else to try other than finding another tech who can check the tune and potentially update it. Just not many options in my neck of the woods.

04-01-2019, 01:40 PM	#2
Nb1081 Drives: 10 2ss/rs Join Date: Jul 2018 Location: Shelby ny Posts: 436	does noise go away when u push clutch in in 6th gear __________________ [/SIGPIC]10 2ss ls3 sw long tubes,cai intake,phastek scoop,se3" exhaust,elite e2, bw stg2tb, tsp f35, motive 4.10 lpw cover, 15" conversion, 510whp tuned by john donovan

04-02-2019, 07:30 AM	#5
Nb1081 Drives: 10 2ss/rs Join Date: Jul 2018 Location: Shelby ny Posts: 436	Its not your motor its your tranny might b able to save rest of it if you get it fixed right away and till then leave it out of 6th you now have a 5 spd. Now this is just my opinion on what you have said your issues are i would also if your not sure try n get on lift and run through gears to 6th and look and listen, but seeing as its only in 6th im going with tranny __________________ [/SIGPIC]10 2ss ls3 sw long tubes,cai intake,phastek scoop,se3" exhaust,elite e2, bw stg2tb, tsp f35, motive 4.10 lpw cover, 15" conversion, 510whp tuned by john donovan Last edited by Nb1081; 04-02-2019 at 07:46 AM.

04-05-2019, 09:04 AM	#10
xc_SS/RS Drives: 2010 Camaro SS/RS Join Date: Mar 2014 Location: somewhere in MD Posts: 4,884	Can you datalog and or tune it yourself? __________________ 2010 2SS/RS Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53

04-01-2019, 05:22 PM	#3
jethrobandit Drives: 2013 Black 2SS Join Date: Feb 2013 Location: Hendersonville, TN Posts: 77	Yes. And it isn't there when holding a speed (65-75) at 1800-2200 RPM. It only happens when I try to accelerate from that range in 6th. Accelerating from that RPM range in 5th or lower, it doesn't happen. To me it's always sounded like knock from bad gas or something. But, I've never put in below 93 and have tried other steps to try and fix it. Only has 42k miles on it.

04-02-2019, 05:50 PM	#8
1LEric Drives: 2015 Camaro 1LE Join Date: Jun 2016 Location: NJ Posts: 152	Try downshifting for your engines sake . You are lugging the engine.