Pathy Posted March 17, 2004 Share Posted March 17, 2004 Do Pathfinders have a warning mechanizm on the brakes that makes a really loud screeching noise when they are very low? Link to comment Share on other sites More sharing options...
Guest tram_bethea Posted March 17, 2004 Share Posted March 17, 2004 I thought the brake pads themselves made that sqeauling noise when they were getting warn out. Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 17, 2004 Share Posted March 17, 2004 A-yup. Link to comment Share on other sites More sharing options...
Pathy Posted March 17, 2004 Author Share Posted March 17, 2004 well it actually stops when i apply the break pads, and it doesnt do it over 40 mph Link to comment Share on other sites More sharing options...
Guest tram_bethea Posted March 17, 2004 Share Posted March 17, 2004 crap I thought I actually had the right answer for once. Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 17, 2004 Share Posted March 17, 2004 Probably needs new rotors. Mine does that and I'm getting REAL tired of it. Link to comment Share on other sites More sharing options...
NissanPerson Posted March 17, 2004 Share Posted March 17, 2004 Could be a stuck caliper. You'll know when your brakes are gone...trust me. First of all, you won't be able to stop for crap, secondly, it'll make the most awful screeching nails on a chalkboard sound you've ever heard. I would take the wheels off and periodically check them...every few thousand miles just to make sure everything is OK. If you have drums in the rear it's good to do it so the cover things don't rust so you won't have a hard time removing them. Link to comment Share on other sites More sharing options...
Pathy Posted March 17, 2004 Author Share Posted March 17, 2004 I can stop, like they are brand new brakes, but the second part is true, it does sound like nails on metal or whatever. Whats a stuck caliper, and would a stuck caliper only make noise when warmed up? Link to comment Share on other sites More sharing options...
k9sar Posted March 17, 2004 Share Posted March 17, 2004 I have had brake pads slip out of the clips on the caliper and lay against the rotor when driving. Nasty sound that goes away when I applied the brakes. Once I discovered what it was, I replaced the clips and all was good. Link to comment Share on other sites More sharing options...
Seattle_Al Posted March 17, 2004 Share Posted March 17, 2004 Nissan factory pads (mine are stamped "Sumatro"), and most aftemarket brake pads have a little spring tab that starts to drag on the rotor when the pad wears down to 2mm (~10% remaining). It's harmless to the rotor, but makes a horrible screaching sound. When you rotate your tires (everyone rotates their tires twice a year, right?:-), it's a good idea to check the thickness of the pads and the condition of the rotors... Link to comment Share on other sites More sharing options...
denisb Posted March 17, 2004 Share Posted March 17, 2004 If you have metalic pads, your brakes might squeal more than cheaper non metalic pads. They have a lub that you can put on the back side of your pads (between metal baking of the pads and the caliper cylinder) this will eliminate some squealing. Also some times if you replace your shims it might work. hope this helps. Link to comment Share on other sites More sharing options...
Pathy Posted March 17, 2004 Author Share Posted March 17, 2004 Its really starting to piss me off, because the screech only happens after about 15 min of driving and its sooo loud that it turns heads, like nails on a chalk board but with different pitches. Ive tried so many things to diganos the problem. heres my data. Only happens at speeds of 10-35 mph, reving the engine has no change on the sound, i turned off the engine going down hill and the screech still was going. ANYHELP plz, it makes my Pathfinder sound like a crappy car. Link to comment Share on other sites More sharing options...
NissanPerson Posted March 17, 2004 Share Posted March 17, 2004 If it's making screeches that loud I'd take the tire off and look at them to see if something like your brake rotor is getting eaten alive. Otherwise you may need to rebuild your brakes or have someone do it for you. Personally, I don't fool around with brakes and steering, if something is being weird with either of those I either check it out or have someone check it out. Those are important parts for safety. I also had trouble with genuine Nissan pads breaking apart. I was told they rust and fall apart at times. They had quite a bit of life left but broke apart...so there was metal on rotors...not good. Anyway, if it's just a little screech and not the grinding screech it could just be a stuck caliper...the thing that clamps the disc brakes down doesn't release fully when they get older and so forth and the brake hangs up slightly...just enough to be annoying. But if it's a nasty grinding noise I would for sure take a look at them. Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 17, 2004 Share Posted March 17, 2004 It's your front brakes, and you need to look into taking them apart to get them to stop squealing. Like I said, mine needs new rotors and it's doing exactly what yours is. Intermittent squeal at lower cruising speeds, which goes away at freeway speeds. Link to comment Share on other sites More sharing options...
Seattle_Al Posted March 19, 2004 Share Posted March 19, 2004 It's the slight deformation of the rubber "o" rings (really more square than round) sealing the caliper piston that cause the pads to retract after applying the brakes. We're talking thousandths of an inch here. If previous owners owners haven't been diligent about flushing brake fluid every couple years, it is possible that enough corrosion is present to cause the caliper to "stick" and not retract fully. Heat causes metal to expand, which is why there may be no noise when everything is cold, but as things warm up, contact (squealing) may occur. Sometimes a full power stop from 60mph is enough to break it free. Sometimes rebuilding the caliper (replacing seals and flushing fluid) will fix it. Sometimes maintenance gets neglected, and you're looking at replacing the caliper. Only way to know for sure is to get in there and look... Link to comment Share on other sites More sharing options...
Pathy Posted March 21, 2004 Author Share Posted March 21, 2004 wow i think that explantion makes more sense than any that i have seen, just becuz i slammed on the breaks the other day, and all that night it stoped screeching. Link to comment Share on other sites More sharing options...
MatterHorn Posted March 21, 2004 Share Posted March 21, 2004 glazed, worn and surface cracked rotors will cause that ... mine are ... and they do that exact same thing ... i'm ignoring it for the time being untill I can afford to replace it along with the rears which seem to be really worn out ... Link to comment Share on other sites More sharing options...
Guest edward Posted March 27, 2004 Share Posted March 27, 2004 Just out of curiosity - I had a Nissan pickup & always had a squealing sound when braking. Someone told me it was due to the silicon goop you put between the back of the brake pad & the shim (not on the caliper/cylinder side) wearing out. So next go round on the brakes I used plain silicon rubber caulk rather than the stuff that came with the new pads. This eliminated the squealing. Does this sound like a wacko thing to do ? I was always worried about temperature/flammability issues, but I drove in the mtns in New Mexico for several years without any problems. Anyway, I don't want to suggest this is what going on with the original issue for this thread. Link to comment Share on other sites More sharing options...
MatterHorn Posted March 27, 2004 Share Posted March 27, 2004 never heard of that before ... but I suppose that is a possiblity ... Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 27, 2004 Share Posted March 27, 2004 More than likely it was the simple act of installing new brakes that elimated the squealing. How would silicone anti-squeal compound "wear out"?? Makes no sense. Link to comment Share on other sites More sharing options...
IowaPathfinder Posted April 7, 2004 Share Posted April 7, 2004 Get the rotors checked and the pads replaced at the least. I had the exact issue same speeds after about 15 minutes of driving the whole nine yards. It drove me crazy too. I had new rotors installed (the old ones were to worn down to be turned and they were starting to warp. The warping was the reson, according to my mech that the pads were not wearing evenly and causing the screech after they warmed up.) and new pads. Pay the extra for the ceramic it pays off huge on when it's bath time. Link to comment Share on other sites More sharing options...
Mr. Pickles Posted April 7, 2004 Share Posted April 7, 2004 Just a thought, but on my old 85 Nissan 4x4, the rear brakes always squeeked, and locked up easy when you first started driving (in rain, etc.). It had always done this, even after new brakes, full inspections, etc. etc. I just got into the habit of dragging the brakes out the driveway and it would go away. Point being, sometimes they just seem to do something strange and there's not much you can do about it. Get them checked out of course, though. Link to comment Share on other sites More sharing options...
kbreitwieser Posted April 8, 2004 Share Posted April 8, 2004 I HATE BRAKES, WISH THEY WOULD STOP SQUEALING. CHANGED THE REARS AND HAD THE ROTORS CUT, THAT NOISE WENT AWAY, NOW IT'S THE FRONTS, NEW PADS 2 MONTHS AGO, READY TO TEAR APART AGAIN TO GET ROTORS CUT, EVEN THOUGH THEY LOOK FINE! AGGGAAHHH!!!! HOPEFULLY WILL HAVE IT ALL STRAIT SOON!!!! JUST NEEDED TO VENT, THANKS FOR LISTENING.....ANY ADVICE WOULD BE APPRECIATED... Link to comment Share on other sites More sharing options...
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