What is this noise after belt change?

[squaredeal91]

Ride the brakes a little and see if noise goes away. Might be sticky or dusty brakes

 

[tophat36]

Entire front end is redone including wheel bearings and calipers. I’ll check the brakes this weekend. I actually have one of those temp guns so I’ll check bearing temp as well. How long of a drive do you think is needed for the temperature difference to show up?

So got home to troubleshoot and the truck battery was dead. Not sure what that was about, but there was a connector on the dual fuel tank solenoid system not plugged it. That is the only thing I did that could have caused electrical issue. I unplugged it after I drove and will see if the car starts tomorrow. Got it started and the noise is gone in fwd or reverse. I drove for 10 min. Wheel bearing temps are different, about 20 degrees warmer on the passenger side.

 

[tophat36]

If you are thinking belt related, maybe the tightened belt put some extra side load on the alternator or something? Get some tubing to act as a stethoscope and see if you can hear it, probably engine speed dependent after it warms up? If not, then coincidence on the belt and check all the other stuff.

Is it a constant noise, or pulsing? Any idea if it changes with vehicle speed, engine speed, or driveshaft speed? See if you can find a construction zone with concrete barriers, that can help you determine where the noise is originating.

Side story, I had my wife's old truck start making a soft grinding, seemed to come from the back, not the front. Both hubs had the same heat signature, and didn't sound like it was driver side or passenger, maybe the middle? But didn't sound like a bad differential either. I was in the process of jacking it up to see about running it in gear on stands (not great, I know, but was making efforts to do it as safely as possible) when I found the culprit. A cardboard box she had stuffed between the cab and bed MONTHS before slipped down and was riding on the driveshaft. So keep an eye out for anything out of place, sometimes cars do weird stuff...

Noise came back and must have been the caliper/pads. I pulled caliper off the passenger side and I am shocked at the brake pad wear. Only extreme heat could have caused this. They have less than 1000 miles of wear. Caliper didn’t look too bad but the rubber piston seal was more extended in one section. Caliper was a NAPA Adaptive One so I warrantied that out just in case. The pads were Wagner ceramic Spent the rest of the day changing the brake hose.

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[xm20k]

Looks like something is holding pressure to the calipers those are very well-done brake hoses maybe swelled almost shut.

 

[tophat36]

Looks like something is holding pressure to the calipers those are very well-done brake hoses maybe swelled almost shut.

Yeah not sure, I will cut that old hose open later. I swapped out that hose and while I was at it did the 2 lines coming out of the master cylinder. Was trying to change the 2 lines that come out of proportioning valve as well but no luck. I now have no brakes bc the proportioning valve needs reset. Anyone know how to do that?

 

[JBswth]

Swapped my alternator belt out and it was squealing something crazy so I tightened it. Noise went away. Got some new metal wipers I was excited to swap out and sprayed some water to test. Went for a test drive for about 5 minutes. Started to hear a super high pitched noise when the truck was in motion. No noise when stopped. Is this something to do with the belt…a bearing maybe? Is the belt too tight? How could it be the belt if it stops when the car stops moving? Link to video below.

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[JBswth]

You say noise stops when you stop. How about if you rev the engine a little in Neutral? If it still makes that noise, it is one of your accessories most likely, but if it doesn't make the noise when revving the engine, it sounds like it is in your front end. I would check the wheel bearings to make sure they are properly packed, AND that they are not too tight. Just finger tight on the wheel-bearing nut, maybe SLIGHT pre-load. Just SLIGHT. Do NOT try to make them tight. How do the brakes feel? Does it sharply pull to one side when you apply the brakes? How about when driving in a straight line with your hands off the wheel? Does it try to steer to one side? If yes, one of your calipers is not fully releasing. Often, that is caused by a flex hose that is rotting on the inside. You can push fluid through it, but it won't return because it won't go past the rotted parts by itself. You check for that by opening the bleeder nipple on the suspected stuck caliper. If fluid shoots out strongly, you will have probably found the problem.

J. B.

 

[edgephoto]

Make sure your rear brakes are working

 

[tophat36]

You say noise stops when you stop. How about if you rev the engine a little in Neutral? If it still makes that noise, it is one of your accessories most likely, but if it doesn't make the noise when revving the engine, it sounds like it is in your front end. I would check the wheel bearings to make sure they are properly packed, AND that they are not too tight. Just finger tight on the wheel-bearing nut, maybe SLIGHT pre-load. Just SLIGHT. Do NOT try to make them tight. How do the brakes feel? Does it sharply pull to one side when you apply the brakes? How about when driving in a straight line with your hands off the wheel? Does it try to steer to one side? If yes, one of your calipers is not fully releasing. Often, that is caused by a flex hose that is rotting on the inside. You can push fluid through it, but it won't return because it won't go past the rotted parts by itself. You check for that by opening the bleeder nipple on the suspected stuck caliper. If fluid shoots out strongly, you will have probably found the problem.

J. B.

Thanks JB, I appreciate your input. I pulled the caliper and pads were trashed. Replaced the caliper(warrantied) and hose. No more noise and no more intermittent pulling to the right. Also rear left wheel doesn’t lock up when I slam on the brakes anymore. It no longer pulls left when I brake hard either. Suspected exactly what you’re saying. There are some pics of the pads a few posts before this.