Is scraping/grinding from the throttle body normal in winter?

N757AF · 01-08-2021, 09:49 PM

Got my Camaro back from the dealership today and they said the scraping/grinding noise I was hearing when the throttle is opened is normal in the cold weather (of course they did). Has anyone else experienced this? It just started for me a few nights ago and has driven me batshit crazy ever since. It makes my 2020 SS 1LE sound like it’s 30 years old. My buddies ‘17 doesn’t make this noise and he’s got 37k miles in the same climate (Tennessee).

mrkyleman · 01-09-2021, 02:17 AM

I have 40K miles on mine, and I also live in TN. Haven't heard it at all and it has been rather chilly this year.

wwiiavfan · 01-09-2021, 03:46 AM

I don’t think that’s normal. If it is “grinding” it might be binding. If it is binding the sensor will force the system into limp mode cause it thinks the throttle is stuck. Had this happen on another GM vehicle when it got really cold out and the excessive crankcase pressure forced moisture into the intake tract and partially froze the throttle body. Nothing like limping along the highway at 10mph when it is 25 below zero.
Maybe a good excuse to replace it with a performance TB? 🙂

LT4Greg · 01-09-2021, 01:19 PM

I personally have never heard an explanation like that about a throttle body! Sounds like the TB should be replaced and they don’t want to do it. I hate to say this but let the thing get worse or fail then it will have to be replaced.

JSH · 01-09-2021, 01:52 PM

definitely not

Number 3 · 01-09-2021, 03:25 PM

This may be a top 5 bs answer from a dealer. If it is actually making noise let alone scraping it should be replaced......But I doubt it’s what’s making noise. Very easy to confirm though.

Paintslinger16 · 01-09-2021, 03:48 PM

It’s definitely not normal, and did this car do this inside the service garage? I am sure it’s at least 60 inside, and it’s probably not actually that cold outside in TN as it is.

N757AF · 01-09-2021, 04:06 PM

Quote:

Originally Posted by Paintslinger16

It’s definitely not normal, and did this car do this inside the service garage? I am sure it’s at least 60 inside, and it’s probably not actually that cold outside in TN as it is.

Good point... I did show them the sound in the garage where it was at least 60. Complete BS from the dealer as usual. Coming from a BMW M235i (and a Toyota Tacoma before that), gotta say the Chevy ownership experience so far has been garbage

Paintslinger16 · 01-09-2021, 07:07 PM

Quote:

Originally Posted by N757AF

Good point... I did show them the sound in the garage where it was at least 60. Complete BS from the dealer as usual. Coming from a BMW M235i (and a Toyota Tacoma before that), gotta say the Chevy ownership experience so far has been garbage

https://www.solerengineering.com/technical

Check out the link, I used this because I knew it was there and have the Soler TB on my car.
You will see it’s four meshed points and nothing to grind or scrap.
Not sure how you got to that conclusion, I would try another dealer at the very least

JCunningham · 01-10-2021, 02:58 AM

you mean if you push the gas pedal when the engine is off? then yes you will hear it but if you can hear it over a running engine then they flat out lied to you.

N757AF · 01-10-2021, 08:27 AM

Quote:

Originally Posted by Paintslinger16

https://www.solerengineering.com/technical

Check out the link, I used this because I knew it was there and have the Soler TB on my car.
You will see it’s four meshed points and nothing to grind or scrap.
Not sure how you got to that conclusion, I would try another dealer at the very least

Appreciate the link. I also don't see anything that could make the sound I'm hearing. I'm guessing that's why they told me it's normal... they can't figure it out. Anyone got a recommendation for a Chevy service dept that's worth a shit in Tenneseee?

01-08-2021, 09:49 PM	#1
N757AF Drives: 2020 Camaro SS 1LE Join Date: Jun 2020 Location: TN Posts: 7	Is scraping/grinding from the throttle body normal in winter? Got my Camaro back from the dealership today and they said the scraping/grinding noise I was hearing when the throttle is opened is normal in the cold weather (of course they did). Has anyone else experienced this? It just started for me a few nights ago and has driven me batshit crazy ever since. It makes my 2020 SS 1LE sound like it’s 30 years old. My buddies ‘17 doesn’t make this noise and he’s got 37k miles in the same climate (Tennessee).

01-09-2021, 01:19 PM	#4
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,809	I personally have never heard an explanation like that about a throttle body! Sounds like the TB should be replaced and they don’t want to do it. I hate to say this but let the thing get worse or fail then it will have to be replaced. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

01-09-2021, 01:52 PM	#5
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,556	definitely not __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

01-09-2021, 03:25 PM	#6
Number 3 Hail to the King baby! Drives: '19 XT4 2.0T & '22 VW Atlas 2.0T Join Date: Dec 2008 Location: Illinois Posts: 12,169 View My Garage	This may be a top 5 bs answer from a dealer. If it is actually making noise let alone scraping it should be replaced......But I doubt it’s what’s making noise. Very easy to confirm though. __________________ "Speed, it seems to me, provides the one genuinely modern pleasure." - Aldous Huxley

01-10-2021, 02:58 AM	#10
JCunningham Drives: 2017 2SS M6 Join Date: Jun 2013 Location: WNY Posts: 7,071	you mean if you push the gas pedal when the engine is off? then yes you will hear it but if you can hear it over a running engine then they flat out lied to you. __________________ real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1

01-09-2021, 02:17 AM	#2
mrkyleman Drives: Chevrolet Camaro 2SS Join Date: Nov 2019 Location: Tennessee Posts: 126	I have 40K miles on mine, and I also live in TN. Haven't heard it at all and it has been rather chilly this year.

01-09-2021, 03:46 AM	#3
wwiiavfan Drives: 2017 1SS Hyper Blue Join Date: Apr 2017 Location: Wisconsin Posts: 478	I don’t think that’s normal. If it is “grinding” it might be binding. If it is binding the sensor will force the system into limp mode cause it thinks the throttle is stuck. Had this happen on another GM vehicle when it got really cold out and the excessive crankcase pressure forced moisture into the intake tract and partially froze the throttle body. Nothing like limping along the highway at 10mph when it is 25 below zero. Maybe a good excuse to replace it with a performance TB? 🙂

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