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Discussion Starter · #1 ·
Has anyone experienced a grinding noise in reverse when the car is cold? I moved out of my garage this morning and the RPM's dropped slightly while the noise occurred. Surprisingly it only happens while cold not while hot and that noise only occurs in the rear..
 

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Has anyone experienced a grinding noise in reverse when the car is cold? I moved out of my garage this morning and the RPM's dropped slightly while the noise occurred. Surprisingly it only happens while cold not while hot and that noise only occurs in the rear..
Hi SerpenteRosso,

Sorry to hear about this! If you decide to visit your local dealership for further diagnosis I'd be happy to offer assistance if needed. Just PM our page with your VIN and let me know.

Andrea
Alfa Romeo Social Care Specialist
 

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Discussion Starter · #4 · (Edited)
How cold? Not you riding the brakes is it?
I'm not riding the brakes, only occurs when the car sits overnight. As I was going in reverse about 3 feet, the RPM's dropped slightly and tried to stall out. This time no noise or grinding, it simply wanted to stall when the car was going in reverse out of the garage. I found something interesting as well. When I start the car cold and let it sit for a minute before it idles, it drops down to the correct level and then afterwards the rpms go up slightly and then go back to normal. I'm wonder if it has something to do with the emissions and or something to do with the throttle position sensor. I'm tempted to take the negative terminal off the battery to see if the car needs to be reset after the service from a couple of weeks ago. Honestly, I may just let ride out until I see someone on here with the same issues, I do not want to bring it in for service if they are unsure and guessing what it may be...
 

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Discussion Starter · #5 ·
Luckily it didn't do it today, let's see about tomorrow which is good news
 

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I hear a grinding noise in reverse while make a sharp turn. Otherwise I don't.
 

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I'm not riding the brakes, only occurs when the car sits overnight. As I was going in reverse about 3 feet, the RPM's dropped slightly and tried to stall out. This time no noise or grinding, it simply wanted to stall when the car was going in reverse out of the garage. I found something interesting as well. When I start the car cold and let it sit for a minute before it idles, it drops down to the correct level and then afterwards the rpms go up slightly and then go back to normal. I'm wonder if it has something to do with the emissions and or something to do with the throttle position sensor. I'm tempted to take the negative terminal off the battery to see if the car needs to be reset after the service from a couple of weeks ago. Honestly, I may just let ride out until I see someone on here with the same issues, I do not want to bring it in for service if they are unsure and guessing what it may be...

Just had this happen this morning! And it was a God awful sound. It sounded like I was dragging metal under my car. Repeatedly looked under the car, expecting to see something stuck. But my car wasn't cold. Backed out of the garage, no problem, took my daughter to school and came home - all without issue and about 20 miles round trip, a lot of highway. Then decided to back into the garage rather than just pulling in, and that's when I heard the horrible grinding noise. Repeatedly looked under the car and checked the tires/brakes. Let it sit turned off for 15 minutes, then started it and back up 6 inches, starting grinding again, but not as bad, pulled forward, no sound, backed up, no sound???

I just happen to be taking it in later today because it threw a CEL on Saturday and the error is still on.

Did you ever have you issue resolved?
 

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2020 Alfa Romeo Giulia Sport Ti AWD
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I suspect it's the steering. Mine doesn't sound any better now that the snow are fitted.
 

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I suspect it's the steering. Mine doesn't sound any better now that the snow are fitted.
My first thought was that it's my studded tires, but I've been using reverse for several days without issue, until today.
 

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Discussion Starter · #10 ·
This noise occurred when the car tried to stall in reverse right after a cold start if you follow the misfire thread it?s sort of tied tied to whole problem
 

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2020 Alfa Romeo Giulia Sport Ti AWD
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This noise occurred when the car tried to stall in reverse right after a cold start if you follow the misfire thread it's sort of tied tied to whole problem
Does your car have studded tires too?
 

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This noise occurred when the car tried to stall in reverse right after a cold start if you follow the misfire thread it's sort of tied tied to whole problem
I still think the steering should be looked at. Perhaps the motor is drawing too much electricity.
 

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I'd advise you make a video when it next occurs and get it into a dealer to be looked at. Unless you want to do a bit of diagnosis yourself, i'd look at the gearbox oil - check the plug for shards.
 

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So, just a thought here after reading this thread. Has anyone thought that it might be the electric park brake not disengaging (disengages electronically but not physically)
 

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Was there a solution ? I just had this happen to me. Pulled out of my driveway and it sounded like I was dragging a metal bar... put it in drive and no issues. Parking brake was off...no ice or visible pieces in the wheels. It does seem to come from one area of the car...front passenger
 

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I had that happen to me on the FR wheel well.
It turns out, that the lower part of the center area of the rear wheel well cover was touching the tire. After pushing it back in place, it hasn't made the noise since.
It would always happen when I had the steering wheel wheel turned all the way to the left.
It had made the noise for awhile, but then one day it was noticeably louder. After turning the wheel all the way to the left, I was able to see that fender lining touching the wheel.
And after calling the AR dealer and being told it's $180, I decided to go ahead and fix it myself.

Originally, I think a stick caught on it in the yard, and loosened it up.
 

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This problem occurs going both directions forward and reverse. But in reverse, the sound is a lot louder. When going forward it is very faint noise, you can barely hear it with your windows closed. I reported on this thread here.
https://www.giuliaforums.com/forum/...ems/42650-wheel-squeak-squeal-low-speeds.html
Now, I don't think it is the brakes. Because the noise does not change/vary when i apply pressure on the brake pedal. I initially thought it was the eBrake not retracting fully. But this is not the case either. A few times when it happened i did not have the eBrake engage. It is something else. I already talked to dealer, they say it is normal in cold weather and that these are high performance brakes. I don't buy it.

To recap the problem:
Happens to me both forward and reverse. Reverse is very loud. Forward is very low noise when it happens. Both direction, the grinding noise sync with wheel speed.
Brake pedal pressure does not have effect on the noise. only wheel speed does.
Can happen when car is cold or warm. But it always happens to me when i just start the car and start to move after it was parked.
Noise goes away after going over bumps, restarting the car, or just driving it for a short distance.
also my steering wheel is straight when this happens. not turning at all.

I did record a short video of the noise when it happen again last week. I will try to link the video after its been uploaded.
 

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See if the backside of your brake disc cover is touching anything. It's like a thin metal disk, and it rubbing the wheel might bake that sorta sound.

Does it ever happen when it's raining?
 
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