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  #1  
Old 10-01-2016, 10:22 PM
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FCA Strange Noise

Ok, here is another one of those danged does anyone know what this noise is threads.

I was driving about 35 on a multilane road today when the guy in the left lane decided to make a right turn in front of me. FCA kicked in and there was a sound similar to what you would hear if the lining was worn off a brake pad - no squeal, but a metal against metal sound. The car stopped fine.

During normal driving, my brakes are absolutely silent and everything works as it is supposed to. There are no codes or messages and the only message I got was the BRAKE one but the vehicle had already started braking. I tried to recreate it, but I really don't like tailgating people, hoping they will hit their brakes.

Anyone have any ideas?

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Old 10-02-2016, 02:11 AM
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Re: FCA Strange Noise

Fiat Chrysler Strange noise? Lol
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Old 10-02-2016, 11:26 AM
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Re: FCA Strange Noise

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Fiat Chrysler Strange noise? Lol
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Old 10-02-2016, 11:32 AM
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Re: FCA Strange Noise

ABS systems make noise when they activate. Since most people never hit the brakes hard enough to activate the system they never hear it.

Only going with your description, this is a guess.


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Old 10-02-2016, 01:16 PM
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Re: FCA Strange Noise

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Originally Posted by bill_de View Post
ABS systems make noise when they activate. Since most people never hit the brakes hard enough to activate the system they never hear it.

Only going with your description, this is a guess.


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That's possible. Now that I think about it, it does sound similar to noises my old Tahoe made when trying to stop on icy roads. Just never heard it in the Jeep and on a dry road on a sunny, warm day, the ABS never entered my mind.
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Old 10-02-2016, 01:51 PM
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Re: FCA Strange Noise

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That's possible. Now that I think about it, it does sound similar to noises my old Tahoe made when trying to stop on icy roads. Just never heard it in the Jeep and on a dry road on a sunny, warm day, the ABS never entered my mind.
Early ABS systems used to freak people out.

There were often news reports where they would assure people that the rumbling, vibrating and "boulders rolling around" feel was actually the system doing its job.

My advice to anyone upon getting a new car from a brand they've never owned before is (once the break-in period for the pads and rotors is over), take the vehicle to an empty lot and perform an emergency stop. Get the vehicle up to about 35-40, then slam on the brakes completely and don't let up no matter what until fully stopped.

That way, when you need to do that for real, you won't be freaked out by the sound or feel and potentially let up when you should be letting the system do its job to stop the vehicle.

Every system is a bit difference, so no manufacturer will feel or sound exactly the same.
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Old 10-02-2016, 03:21 PM
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Re: FCA Strange Noise

My father was the head of the Highway Safety Division of the NTSB and I recall when they were testing ABS systems back in the 70's. At that time, they were planning on mandating them only for tractor trailers as there had been a number of accidents then that a good ABS system might have prevented or mitigated. The issue you suggest (not keeping your foot on the brake during the process) was one of the big problems they were having with the drivers testing the systems. I had the same problem myself when I bought my 97 Explorer with ABS having learned to drive and dealing with slippery roads by pumping the brakes.

Like anything else, it's a learned response.
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