Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









Search Auto Parts

2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads)


  Email This Post



Jkat23
Novice

Jul 30, 2020, 8:03 PM

Post #1 of 20 (317 views)
post icon 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Hello everyone. I know reading the subject of this post screams brake pads but I just replaced my brake pads a month ago, and yes they were put in the right way. Car has 130k miles.

A little background about my driving and the noise: so I work for a pharmacy and I deliver medications (about 30 houses per day), so it's a lot of local driving and stop and go. When I first get into my car for the day, there is no grinding sound when I step on the brakes. I can drive to work with no issues. But once I leave my work place and start making my rounds and I've been driving for over 30-40 mins and I assume heating up the brakes from all the stopping, I start to hear a grinding noise from the front left when I brake (only audible from ~15mph - 0). It will probably grind 5 or 6 times in a row and then will stop grinding the next 2 times and then it will come back.

Again, the grinding noise is ONLY audible after 30-40 mins of driving and is ONLY heard when braking from ~15-0. There are no other noises any other time and the brake pedal and stopping power seems unaffected in my opinion.

I took the car to my independent mechanic and he said I had a stuck caliper and that I needed to replace it. So I followed his advice and just did it myself and order the part from rockauto, double checking the compatibility of the part. The brake hardware was all installed, brake system was bled, and the car stopped perfectly fine. But the grinding noise ended up not being resolved and I realized I just wasted my time and money into a caliper when I most likely didn't need one. I most recently checked out my rotor and there are no grooves or fresh silver markings from being grinded out anywhere on the caliper, brake pads, or rotors. I will say that there is one raised bump I would say less than a millimeter wide and raised not even half a millimeter off the rotor, with a corresponding indentation on the brake pad. I noticed it three weeks ago when I replaced the caliper and it looks exactly the same today.

I did discover a non-braking part that had cuts and deep grooves in it but I could not figure out from what. Possibly from the dust shield but what else?? I will attach photos.






Please help!!


(This post was edited by Jkat23 on Jul 30, 2020, 8:21 PM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 30, 2020, 9:35 PM

Post #2 of 20 (309 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Job one with brakes isn't to just toss pads or do one thing to one side and not to both but let that be for now.
What's with the damage to the hub, spindle and shield in the pics? Appears like either some aggressive move to remove rotor there or damage from like a wheel falling off? It begs questions anyway and isn't normal.
What is the real scoop with the untouched rotors and pads not shown otherwise those are informative pictures of things not going so well there for some reason not just norm wearout of brakes?


T



Jkat23
Novice

Jul 30, 2020, 10:30 PM

Post #3 of 20 (302 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

I agree with your first statement. Originally, both left and right brake pads were replaced by my mechanic. A week after this I started to hear the grind in the front when applying the brakes.

When I took my car back to the mechanic, he said my left front brake caliper was stuck and causing the grind so it needed to be replaced. The front left caliper was replaced after replacing my brake pads the week before, so the same brake pads were reused as they looked brand new and undamaged. The grinding still persisted however.

Mechanic said the rotors were fine and the new pads were still good. Unfortunately I didn't take photos. I can attach some photos in the next few days.

The damage to the hub, spindle and shield has me curious as well. It all looks pretty recent as it isn't covered in brake dust or rust. The wheel never fell off this car. My question is if there are any parts in the cars braking system or suspension that could cause this kind of damage? Is it possible that this can be the source of my grinding issue when applying the brakes or is it most probably unrelated?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 30, 2020, 10:55 PM

Post #4 of 20 (298 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

You are doing well to post pics at this site - most can't! Anyway, that damage is OUT of the way IMO for now for noise but still begs "WHAT THE HECK HAPPENED?"


That's damage of something really wrong that happened can only be IMO. If you were NOT driving it by guess it was the techs/mechanics that worked on it - WHAT HAPPENED?
I can't say that's the cause of any noise now or grinding as you put it but chunks of metal, IDK what embedded in pads, new or used for a minute they can get a chip or chunk of metal into them then forever be all noise and wrong quickly making marks you noticed - pics not really needed you said so.
It's understood you use this for stop and go deliveries - such is life today big time if only local to me is most of the traffic I see!


Still you need this thing to run without aggravation (anyone does) more than most probably right about now think something just went wrong out of your sight and no wouldn't be brought up it thought fixed or OK when you get it back from even being looked at.


Your first thought was correct I think now. Toss the new pads and toss the rotors too I doubt they are costly on a popular car with a wide range of choices - do be careful price doesn't mean better grade or not sometimes it's dumping a problem part most cloned by some off-shoot something not OE opens Pandora's Box of troubles later or right away.


Side note: Older phart here not so thrilled with on-line parts rather spent decades upon decades now putting parts on a counter to match up, hold, look at flaws and decide not this sh*t thru the ZOO out there 1/2 of assorted crap has to go back is a royal pest and takes up my time/energy never mind the price of stuff - auto or otherwise.
Right now what you can do is look up new OE rated pads and rotors I doubt too hard to do but do service the other caliper and check hardware of the new one is OK that too can make all kinds of noise if wrong or bent up installing them now high on this car for a MAYBE with that damage showing.


Good luck. BTW - I'm just up this site is NOT auto attended and now just a few of us checking in do what we can. It's also all free no tricks or games I know of or wouldn't be here myself, :-) Tom


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 31, 2020, 4:43 AM

Post #5 of 20 (281 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

I can tell you what those marks are and they are man made.

I can see that you had the wheel studs replaced and whomever did that ground the hub down to get sufficient clearance to drive the stud out without removing the hub as normally required.

It would have been much easier to cut the stud off from the outside before driving it out the back. When installing the new studs they could have ground off a flat area of the head on one side of the stud to gain sufficient clearance to install it.

These are trick we use to avoid what he did.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 31, 2020, 5:12 AM

Post #6 of 20 (277 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

OH MY! I would NEVER!
There's always something to learn. Hammer for public view still if ONE broke that made clearance for a new stud - right? If more than one broke if more doable than this I'd always toss the hub and NG anymore.


I see the high heat grease I think masked to me any thought of that needing to be replaced ONE not more certainly.


OP - just a comment on wheels, lug nuts and these type set ups. It's my doing to just touch the threads with that grease so lug nut doesn't stick and if/when wheel off a smear so rusted hub rotors can be removed if applicable to the type.


I'm in a rust-belt area nothing is exempt if used on rock salted roads will say for an 8 year old this looks good compared to many I see.
On lug nuts to alloy wheels: Do note the taper of nuts is the lock is a danger spot IMO and experience. Steel wheel types will distort some is the locking concept is less trouble than alloys some deep inside wheel types.


Use of a real torque wrench/tool and rotating wheels as suggested or double that will help along the way as well.


Sorry that happened you have some things to discuss with who might have done that I'd be on fire angry!
Tom


Jkat23
Novice

Jul 31, 2020, 6:52 AM

Post #7 of 20 (268 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

That is something that I should bring up to my mechanic. I actually did have 4 studs replaced on that wheel because he over torqued the lugs on that wheel after I replaced my brake pads. When I went back to him to see what the grinding noise was the week after, he had broken off 4 lug nuts trying to take my wheel off and blamed it on excessive heat build up from a "stuck caliper" which was causing the grinding.

Well, after replacing the caliper myself and realizing the grinding sound was still there, I knew he was BSing me. I also know I shouldn't have paid to get my studs replaced by him as he ended up doing more damage.

This is why I've come to carjunky! I'm a little handy myself and have the appropriate tools to do things at home so before I waste money buying parts, I wanted opinions!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 31, 2020, 6:57 AM

Post #8 of 20 (264 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

What he did didn't do any real harm to the hub but there definitely were better shortcuts to take than grinding the hub housing.
He also cut away part of the backing plate from that area.

As for your grinding, it's very possible that the backing plate is slightly bent and making contact with the rotor. Very easy to push away.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jul 31, 2020, 6:59 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 31, 2020, 7:11 AM

Post #9 of 20 (258 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

OK, OK: "He broke them" > That says enough on that. Also, you would never replace 4 of 5 just maybe 1 of 5 if 5.
YOU keep saying "I" as in You did the brake pad job - right? Stuck caliper causing heat that much? Just maybe so why didn't you notice wild odor and pulling hard actually one way then the other said you did just one?
I trust you are quite busy with this thing but brakes you should be taking your time. You can tell if one isn't right usually just doing pads or hardware if installed wrong cause issues not so much heat.


Flex hoses fool people that caliper is the problem locking brake fluid pressure at caliper dragging up to red hot is true if you ignored it. YOU CAN'T RE-USE THOSE PADS IMO EITHER. They would go glassy way to hard or cracks showing - depends on friction material.
Right now the question is what do you wan to do as it still makes noise and shouldn't?


I'd be tossing all the stuff out now, both sides, flex hoses and all you don't want anything to do with brake fluid either that got that hot it's cooked if really so would look burned or did you notice when doing just pads or they?


A time line of who did what is tough or I missed it, sorry. Any which way it can't stay like that also just because check on that backing plate new IDK how much but bet not much it should go I don't trust it now.
I'm sure you are handy it's when everything goes wrong you find out the fine details of auto repair at another level and how you really fixed it.


Here to help despite $$ tight this isn't good so now knowing 4 studs replaced that has to go too! That will bring about need for an alignment too I'm near sure,


Tom


Jkat23
Novice

Jul 31, 2020, 7:12 AM

Post #10 of 20 (256 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

I guess I'll try pushing the dust shield backwards, thank you for the suggestion. I was thinking about cutting off those sharp/pointy pieces of the dust shield that I circled in the photo as it seems like they are cutting into the hub itself as well. What do you think?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 31, 2020, 7:17 AM

Post #11 of 20 (254 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

My posts are slow to show. Out of order with HT's. Check on new backing plate it isn't usually costly. I'll agree to disagree about 4 lug nut studs being replaced was taught otherwise is still better than broken ones does take understanding how much to torque first before you know they are set in? OMG it's been ages and I stock many just getting old.


Your call but when you get noise out of it and they feel great not just fair I still hate shortcuts for brakes the one you may hit because of that ===== need I say more?


Tom


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 31, 2020, 7:40 AM

Post #12 of 20 (249 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

No, I wouldn't try to replace the backing plate. That would require removing the pressed in hub and likely the hub bearing also.
That would open up a whole new can of worms.

Just put the rotor in place and put 3 lug nuts on to keep it in place. Then you can rotate the rotor and see behind it if anything is touching it.

No, the old backing plate is not cutting into the hub. That's impossible.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jul 31, 2020, 7:41 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 31, 2020, 9:05 AM

Post #13 of 20 (235 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

2nd look at 3rd pic I agree. That plate probably made a full circle and was cut out with a grinding wheel can see evidence and you circled that. It's super sharp wouldn't be quite that bad.


It will go sometime so do yourself a favor if you still have that view or next time spray some PB solvent from the back! Not front/outer those fasteners will probably bust also and you need the plate for splash NOT noise.


Change up question on this: Did replacing the caliper change a guess (I think) that it was frozen? Just asking as it's possible just really frozen usually takes dunking the whole wheel under water over pistons of caliper to lock up tight while warm dust boot sucks in water and can't dry it out is the cause of most just FYI and IMO, Tom


Double J
Veteran / Moderator
Double J profile image

Jul 31, 2020, 9:38 AM

Post #14 of 20 (226 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Who replaced the brake Pads?


Quote
Originally, both left and right brake pads were replaced by my mechanic.


Quote
because he over torqued the lugs on that wheel after I replaced my brake pads

You mentioned the mechanic replaced them and you replaced them....Did they get replaced twice??

I was wondering what type of Brake pad you or he used ?

I have had instances where a Semi Metallic pad was used and caused this exact concern , replacing them with Ceramic Pads eliminated the noise.
Ceramic is OE Pad Material


Jkat23
Novice

Jul 31, 2020, 1:58 PM

Post #15 of 20 (206 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Hey sorry about the confusion, my choice of words is bad. Here is a run down of who did what in order of how they happened:

1. Mechanic changed front brakes pads.
2. I noticed grinding noise when braking from around 15 mph - 0mph ONLY when I've been driving for a while (more than 30-40mins).
3. Took car back to mechanic to diagnose the grinding. While taking off the tire, he broke 4 lugs, told me that the problem was I had a sticking caliper and that it needed to be replaced. I told him to just put the car back together and fix the studs.
4. I ended up buying the front left caliper and changing it out MYSELF, while using the same brake pads as they still were new.
5. Grinding noise didn't change, still coming on after about 30-40 mins of driving.
6. Yesterday I took off my caliper, pads, and rotor to inspect if anything was grinding on any of those parts. I found nothing out of the ordinary or gouging on the brake parts, but I found the damage to the hub. The photos attached in my first post were taken yesterday in my driveway.

So the only thing I changed was the caliper. I'm still running the same brake pads that he originally put in. I hope this clears things up.

I also don't know what type of material the brake pad is. I should have asked. Unsure


Jkat23
Novice

Jul 31, 2020, 2:03 PM

Post #16 of 20 (204 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In


In Reply To
No, I wouldn't try to replace the backing plate. That would require removing the pressed in hub and likely the hub bearing also.
That would open up a whole new can of worms.

Just put the rotor in place and put 3 lug nuts on to keep it in place. Then you can rotate the rotor and see behind it if anything is touching it.

No, the old backing plate is not cutting into the hub. That's impossible.


Yeah I spun the rotor in place with the caliper and brake pads on and it spun freely without anything rubbing on it. I'm thinking I should just try to get some OE rotors and brake pads as I have a feeling my mechanic didn't put in OE brake pads.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 31, 2020, 2:10 PM

Post #17 of 20 (202 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

OEM is not necessary when it comes to brakes. There are way too many choices in the aftermarket.

Just buy a good quality of Ceramic brake pads. Pay no attention to any mileage claims as the high mileage pads are the ones that cause most of the problems. If the pads come with shims for the back, be sure to use them.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 31, 2020, 2:28 PM

Post #18 of 20 (199 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Thanks for putting this saga in order. They did the pads, then later a frozen caliper? How long was it they retracted the pistons when THEY did the pads?


Now if you didn't feel a dragging brake, warm/hot wheel who knows now if it was bad? The rotor if that bad from head would be blueish and most would warp too. I wonder on that but let it be.


Ayup, do what you said and OE ceramic's may be do no "fade" as much or at all with heat is the claim anyway. I tried some (my own first) when newer to have wild claims but made black dust all over creation so dumped those and they also wore out FAST?? Nothing wrong either two vehicles both in top shape.


Good luck I'll just re-assert hoses are suspect by age, time, use and most of all abuse like letting a caliper hang and bang around by the hose or twist it all up to get out of the way - don't do that. Toss them if you can and never need them again on this.
You've been a great sport with us wish you good luck the more you know and ask the better the luck gets :-)
Tom - still in all lockdown hell around me but loosening up some still super suks!


Jkat23
Novice

Jul 31, 2020, 2:34 PM

Post #19 of 20 (195 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

Good to know. I'll definitely look into some good quality pads. Thank you for taking time out to help!


Jkat23
Novice

Jul 31, 2020, 2:37 PM

Post #20 of 20 (191 views)
Re: 2012 Honda Accord LX 4 cyl 4dr grinding noise when braking (new pads) Sign In

I don't really think there was anything wrong with the caliper to begin with especially since nothing has changed. The wheels do get hot but that's most likely because I'm doing local deliveries non-stop for 3+ hours.

But yes, I think I will change out the rotors and pads and see if that helps.

Thank you Tom for taking out time to give me advice!






  Email This Post
 
 


Feed Button




Search for (options) Privacy Sitemap