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Metallic scraping sound while going 30-35mph

13429 Views 14 Replies 6 Participants Last post by  mbrinz76
Hey this is my first post on the forum so i hope i am doing it correctly. Heres the deal, while i am driving i get a metallic scraping sound but only when i am going like 32 to 34mph. It stops once i hit 35mph and stops if i slow to 30mph. The only sound i can compare it to is a knife being sharpened. Kinda like a circular metal on metal sound. Might be coming from the front end, kinda hard to tell. Anyone know what it could be? Any help is appreciated!!!!!
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Brakes? Might be the first thing to check. Run ur finger along them and see if they are messed up
Check your front drive shaft. look for a bare metal part on it like its been worn away. it sounds like your front drive shaft is hitting the exhaust.
Thanks that will give me good starting points. I will have to look tomorrow. Its been doing it for a while and its my daily driver but i have not had any problems other than the noise. Would it be something to worry about?
it depends on whats making the noise if you need to worry or not. but metal on metal scraping, probably would scare me. if it is indeed the front drive shaft hitting the exhaust, which mine was doing, it slows down the exhaust because it eventually wears down a grove in the pipe and can eventually cause an exhaust leak.
I dont know much about cars, but i dont think it would be the brakes. It makes the noise even if i am not using them, like if i am just driving.
I dont know much about cars, but i dont think it would be the brakes. It makes the noise even if i am not using them, like if i am just driving.
if your pads are worn out and the rivets or the steel plate is rubbing the rotor then you will hear it when you are not using the brakes..if you run it very long like that you will need new rotors as well as pads....if that is the problem
I just change my manifold and drove the jeep and found the exhaust was scraping the front drive shaft. I guess there is a different angle on the new manifold. I hope it wasnt an error on my part during installation. Does anyone know if this is a problem with the new manifolds?
mbrinz76 said:
I just change my manifold and drove the jeep and found the exhaust was scraping the front drive shaft. I guess there is a different angle on the new manifold. I hope it wasnt an error on my part during installation. Does anyone know if this is a problem with the new manifolds?
You can loosen up the two connector nuts that connect the manifold pipe to the cat pipe, rotate the exhaust pipe, then retighten being sure to hold the exhaust at that angle when tightening.
I took it to the muffler shop and let them fix it. I have another problem. The Jeep has a 6" lift and I am getting alot of vibration when i accelerate above 20mph. i had all the tie rods,u joints in the rear, and the ball joints replaced. i also got an alignment. I am still having the vibrations but they stop when i push in the clutch or step off the gas. I think the transfer case is not low enough. i just bought the jeep and know very little about it. I want to lower it to a 2.5"-3" lift just to fit the 32" tires. What do I do? I dont want to spend a fortune or get robbed at a shop for multiple things that are not the problem. Please reply! Location Colorado Springs!
I forgot to ask about the transfer case. It only has 4 spacers in it now. 2 on the rear on each side. It is sitting at an angle. the far 2 rear spacer are about 3/4". Should I add more spacers to the mount and bring it level and down?
Your front and rear driveshaft cancelling angles could be way off, and causing CV joint failure. My rear CV joint made the whole Jeep shake under load and even not under load as is started dying. Needle bearings came out some how. Easy cheap $20 fix.
Sounds like my front drive shaft is shaking while starting to drive. A little grinding while its turning. Stops as I speed up and shaking at about 30mph. And clunking when I let off the gas.
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