Do you have the NPP rattle? - Page 8

Techn9cian805 · 05-26-2016, 12:36 PM

Quote:

Originally Posted by raptor5244

I think I am going to have to go that route until there is a fix. Funny, I had a 1lE for the last 3 years and it uses a vacuum method to open and close the NPP valves and I never had an issue. They switch to electric NPP valves and now they rattle.

Can you remind me of the fuse #?

Thanks.

fuse 51

meb91 · 05-26-2016, 03:00 PM

I have the rattle/buzz, happens right around 2k RPM. The dealer ordered me a whole new exhaust system, and told me it's a new part number that supposedly does not have the issue. They're installing it today, will update you guys when I get it back.

Adrian97c · 05-26-2016, 03:05 PM

Quote:

Originally Posted by meb91

I have the rattle/buzz, happens right around 2k RPM. The dealer ordered me a whole new exhaust system, and told me it's a new part number that supposedly does not have the issue. They're installing it today, will update you guys when I get it back.

Looking fwd to seeing the paperwork, part#, etc.

Thx

Sent from my iPhone using Tapatalk

raptor5244 · 05-26-2016, 05:02 PM

Quote:

Originally Posted by Adrian97c

Looking fwd to seeing the paperwork, part#, etc.

Thx

Sent from my iPhone using Tapatalk

Same here. Please keep us posted.

raptor5244 · 05-26-2016, 05:07 PM

Quote:

Originally Posted by Techn9cian805

fuse 51

Thanks. I pulled the fuse, no more rattle. It basically sounds like Track mode all time, which is fine until we get a real fix. The buzzing drives me nuts.

Also, no drone at highway speeds with the A8, AFM valves kick in and it is quiet.

Sparkgap · 06-01-2016, 09:29 AM

Only in Tour mode when cold.

Megawatts · 06-01-2016, 10:33 AM

Quote:

Originally Posted by meb91

I have the rattle/buzz, happens right around 2k RPM. The dealer ordered me a whole new exhaust system, and told me it's a new part number that supposedly does not have the issue. They're installing it today, will update you guys when I get it back.

I am getting my whole exhaust replaced as well. They ordered last Tuesday, so if I had to guess it is the new part as well. How long did you have to wait for it to be delivered from your original order date?

Vyncynt · 06-01-2016, 12:28 PM

Took mine to the selling dealer recently and the service guy said he didn't hear a thing. I hopped in the car with him, put the seats down, turned off the radio and the A/C. After a few minutes, he heard it. He said he never heard of any complaints about it. I said, now you have. He found no service bulletins or anything, but noted it in system. I'll be taking mine to the dealer near where I live for further investigation.

meb91 · 06-02-2016, 01:13 AM

Quote:

Originally Posted by Megawatts

I am getting my whole exhaust replaced as well. They ordered last Tuesday, so if I had to guess it is the new part as well. How long did you have to wait for it to be delivered from your original order date?

It took about 6 weeks for the new exhaust to arrive, but I was told there was a delay while they were working on producing the new part number. So hopefully they're being produced faster now and it won't take that long for you.

My new exhaust is installed but the car is still at the dealer because they're also replacing the differential. It was making groaning sounds and GM recommended to replace it. I know, I'm having such great luck with this car... should have it back next week and will give you guys an update.

keon718nyc · 06-02-2016, 03:08 PM

Love the car without the fuse!!!! I didn't have a rattle before or after i pulled the fuse but ill tell ya, the NPP is a blast with the valves open all the time and no drone as well on the highway ect. I could care less about the modes to close the valves at this point but feel your pain as the buzzing or rattle should be null...

Megawatts · 06-02-2016, 03:18 PM

Quote:

Originally Posted by meb91

It took about 6 weeks for the new exhaust to arrive, but I was told there was a delay while they were working on producing the new part number. So hopefully they're being produced faster now and it won't take that long for you.

My new exhaust is installed but the car is still at the dealer because they're also replacing the differential. It was making groaning sounds and GM recommended to replace it. I know, I'm having such great luck with this car... should have it back next week and will give you guys an update.

Thanks for the information. Keep us posted.

raptor5244 · 06-02-2016, 05:28 PM

Quote:

Originally Posted by keon718nyc

Love the car without the fuse!!!! I didn't have a rattle before or after i pulled the fuse but ill tell ya, the NPP is a blast with the valves open all the time and no drone as well on the highway ect. I could care less about the modes to close the valves at this point but feel your pain as the buzzing or rattle should be null...

I feel the same. This fuse pulled mode is actually my favorite. On an A8, we have AFM NPP valves so we never get drone on the highway anyway. They should just change the programming logic for Track to mean "always open" even during light cruise, etc.

jaymsu · 06-03-2016, 07:31 AM

On and off.... I don't know what conditions bring back the rattle, but it's there.
Started around 1,500 miles I think.
At first, I thought something was rattling inside the vehicle. Later, I noticed it was coming from passenger side muffler.

It's not rattling now, and don't know when it will start again. (just noticed yesterday, when I took off hard and went over 4,500RPM, weird sound was coming from same area, but the rattle didn't stay when I let off)

Vyncynt · 06-03-2016, 07:54 AM

I noticed that the rattle is occurring more frequently regardless of drive mode. Sounds like I am dragging tin cans behind the vehicle.

Just about to break the 1,500 mile break-in period.

View Poll Results: Do you have the NPP rattle/buzz
Yes	137	43.77%
No	176	56.23%
Voters: 313. You may not vote on this poll

05-26-2016, 03:00 PM	#100
meb91 Drives: 2016 Camaro 2SS Join Date: Nov 2015 Location: Irvine, CA Posts: 58	I have the rattle/buzz, happens right around 2k RPM. The dealer ordered me a whole new exhaust system, and told me it's a new part number that supposedly does not have the issue. They're installing it today, will update you guys when I get it back. __________________ Delivered 3/24/16: 2016 Camaro 2SS, Nightfall Gray Metallic, Jet Black interior, 56R wheels, NPP, black bowties

06-01-2016, 12:28 PM	#106
Vyncynt Drives: 2016 Camaro 2SS (on order) Join Date: Mar 2016 Location: Alabama Posts: 330	Took mine to the selling dealer recently and the service guy said he didn't hear a thing. I hopped in the car with him, put the seats down, turned off the radio and the A/C. After a few minutes, he heard it. He said he never heard of any complaints about it. I said, now you have. He found no service bulletins or anything, but noted it in system. I'll be taking mine to the dealer near where I live for further investigation. __________________ 2016 Camaro 2SS Garnet Red V8, Dual Exhaust, MRC, Nav, Sunroof, Loaded "Ahhh! Take care to get what you like or you will be forced to like what you get!" - Lyrics from a song from Scooter: "Apache Rock the Bottom!" Previously owned 1998 BMW 540 w/M-series package 1991 Trans Am GTA 1985 Saab 900 Turbo (Burned leaded fuel on the Autobahn) 1985 Firebird (R.I.P.) 1976 Camaro LT

06-03-2016, 07:31 AM	#111
jaymsu Yeti's Daddy Drives: ATS-V, Prowler, M6 V10 Join Date: Jun 2015 Location: Ann Arbor, MI Posts: 1,011	On and off.... I don't know what conditions bring back the rattle, but it's there. Started around 1,500 miles I think. At first, I thought something was rattling inside the vehicle. Later, I noticed it was coming from passenger side muffler. It's not rattling now, and don't know when it will start again. (just noticed yesterday, when I took off hard and went over 4,500RPM, weird sound was coming from same area, but the rattle didn't stay when I let off) __________________ 2SS Nightfall Grey /Adrenaline red interior NPP / MRC / Nav / 6 Spd 1100: 7/27/15 <SSWNNN> 3000: 9/04/15 <TPW:10/19/15> 3800: 10/19/15 <VIN: 117740> 6000: 12/16/15

06-03-2016, 07:54 AM	#112
Vyncynt Drives: 2016 Camaro 2SS (on order) Join Date: Mar 2016 Location: Alabama Posts: 330	I noticed that the rattle is occurring more frequently regardless of drive mode. Sounds like I am dragging tin cans behind the vehicle. Just about to break the 1,500 mile break-in period. __________________ 2016 Camaro 2SS Garnet Red V8, Dual Exhaust, MRC, Nav, Sunroof, Loaded "Ahhh! Take care to get what you like or you will be forced to like what you get!" - Lyrics from a song from Scooter: "Apache Rock the Bottom!" Previously owned 1998 BMW 540 w/M-series package 1991 Trans Am GTA 1985 Saab 900 Turbo (Burned leaded fuel on the Autobahn) 1985 Firebird (R.I.P.) 1976 Camaro LT

06-01-2016, 09:29 AM	#104
Sparkgap Drives: 2016 Camaro 2SS Join Date: May 2016 Location: Lancaster, PA Posts: 24 View My Garage	Only in Tour mode when cold.

06-02-2016, 03:08 PM	#108
keon718nyc Drives: Challenger SP Shaker/Arcadia Denali Join Date: Jan 2016 Location: New York City Posts: 1,928	Love the car without the fuse!!!! I didn't have a rattle before or after i pulled the fuse but ill tell ya, the NPP is a blast with the valves open all the time and no drone as well on the highway ect. I could care less about the modes to close the valves at this point but feel your pain as the buzzing or rattle should be null...

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