Rattling and knock sensors... - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

PQ · 02-10-2012, 11:40 AM

Any way to get a video with audio of the noise?

tramtwo · 02-10-2012, 11:52 AM

Quote:

Originally Posted by PQ

Any way to get a video with audio of the noise?

Thanks, yeah I have this idea on the front burner, but it looks like a rainy weekend here. Best thing about this problem is I haven't thought about my top's rub marks in days!

daveagogo1 · 02-10-2012, 12:30 PM

You said muffler delete. Is that all? If you swapped out to a larger exhaust or even the new exhaust pipe is pulling downward on your stock setup it could be hitting your tunnel brace. This will cause a rattle and can trigger knock sensors.

Slide your fingers in between the exhaust and the brace and see how much room you have. Then pull down on the pipes and see if you hear it hit the brace.

tramtwo · 02-10-2012, 04:23 PM

Quote:

Originally Posted by daveagogo1

You said muffler delete. Is that all? If you swapped out to a larger exhaust or even the new exhaust pipe is pulling downward on your stock setup it could be hitting your tunnel brace. This will cause a rattle and can trigger knock sensors.

Slide your fingers in between the exhaust and the brace and see how much room you have. Then pull down on the pipes and see if you hear it hit the brace.

Thanks, I'll try that again. Yep just the muffler delete... and the noise follows the up and down of the car over bumps... smaller bumps cause the loudest noises.

Know what it mostly sounds like? A set of keys jangling, but if the keys weighed about ten pounds each.

tramtwo · 02-12-2012, 08:23 PM

So it WAS a small pebble in the lower control arm! Reflashed and it runs like a dream now!! Thanks for all the help. :-)

CSM088 · 02-12-2012, 10:34 PM

I can't believe this. Those KR sensors are way too wonky if typical things like (in my case) a loose baffle or (in yours) a friggen PEBBLE will send them off and cause the car to run slow.

Regardless, I am happy for you! I can't wait to get my new exhaust set-up so I can feel the true power of my Camaro. Way to persist.

tramtwo · 02-12-2012, 10:40 PM

Quote:

Originally Posted by CSM088

I can't believe this. Those KR sensors are way too wonky if typical things like (in my case) a loose baffle or (in yours) a friggen PEBBLE will send them off and cause the car to run slow.

Regardless, I am happy for you! I can't wait to get my new exhaust set-up so I can feel the true power of my Camaro. Way to persist.

Thanks, I'll upload a video tomorrow, you will NOT believe how much noise came from one little pebble. The car has always been fast, now it is quick again!!

ssmike · 02-13-2012, 04:49 PM

Glad you found the problem! My kr's were pulling timing due to a LOOSE STARTER! I was under the car one day to change the oil and grabbed the starter to pull myself around and it moved! I couldn't beleive it! I had to tighten both bolts, after that my timing pulls virtually dissappeared! I think the dealership didn't tighten it down properly after they repaired the oil pan leak! It took a couple months for me to go through everything to find the cause only to find this by accident! I was pissed but happy at the same time.

tramtwo · 02-14-2012, 03:54 PM

This

Caused by this in the lower cross member.

JANNETTYRACING · 02-14-2012, 04:07 PM

Quote:

Originally Posted by tramtwo

This

Caused by this in the lower cross member.

Who's Da Man???

LOL

tramtwo · 02-14-2012, 04:24 PM

Quote:

Originally Posted by JANNETTYRACING

Who's Da Man???

LOL

Yea, yea, yea. You are soooo proud of your humility!!

There is a part of the cross member that is closest to the wheel outside of the shock mount location... this is where it was. I could only fit a pinkie in there and used wood glue to stick my finger to the rock to lift it out.

Ted even though you have most of my engine mod money and I am going to have you install a cam later this summer, if you give me your ship to address I want to send you and your crew a King Cake.

JANNETTYRACING · 02-14-2012, 04:26 PM

Quote:

Originally Posted by tramtwo

Yea, yea, yea. You are soooo proud of your humility!!

There is a part of the cross member that is closest to the wheel outside of the shock mount location... this is where it was. I could only fit a pinkie in there and used wood glue to stick my finger to the rock to lift it out.

Ted even though you have most of my engine mod money and I am going to have you install a cam later this summer, if you give me your ship to address I want to send you and your crew a King Cake.

A Burger King Hat will Suffice

tramtwo · 02-14-2012, 04:28 PM

Quote:

Originally Posted by JANNETTYRACING

A Burger King Hat will Suffice

Trust me you want one of these!!

JANNETTYRACING · 02-14-2012, 04:42 PM

Quote:

Originally Posted by tramtwo

Trust me you want one of these!!

OK I'll Bite, in signature.

02-10-2012, 11:40 AM	#29
PQ Booooosted. Drives: 2010 Supercharged SS Join Date: Apr 2008 Location: Mobile, AL Posts: 36,717 View My Garage	Any way to get a video with audio of the noise? __________________

02-14-2012, 03:54 PM	#37
tramtwo Drives: 2021 1LE Join Date: Jul 2011 Location: N'Awlinz Posts: 6,315	This Caused by this in the lower cross member. Attached Images

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02-12-2012, 08:23 PM	#33
tramtwo Drives: 2021 1LE Join Date: Jul 2011 Location: N'Awlinz Posts: 6,315	So it WAS a small pebble in the lower control arm! Reflashed and it runs like a dream now!! Thanks for all the help. :-)

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CSM088 Drives: 1981 Z28 // 2010 1SS LS3 Join Date: Aug 2011 Location: Winnipeg, Canada Posts: 254	I can't believe this. Those KR sensors are way too wonky if typical things like (in my case) a loose baffle or (in yours) a friggen PEBBLE will send them off and cause the car to run slow. Regardless, I am happy for you! I can't wait to get my new exhaust set-up so I can feel the true power of my Camaro. Way to persist.

02-13-2012, 04:49 PM	#36
ssmike BL1ZZRD Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009 Location: Buffalo, NY Posts: 7,841	Glad you found the problem! My kr's were pulling timing due to a LOOSE STARTER! I was under the car one day to change the oil and grabbed the starter to pull myself around and it moved! I couldn't beleive it! I had to tighten both bolts, after that my timing pulls virtually dissappeared! I think the dealership didn't tighten it down properly after they repaired the oil pan leak! It took a couple months for me to go through everything to find the cause only to find this by accident! I was pissed but happy at the same time.