jorjio_k
Active Member
- Posts
- 490
- Location
- Lebanon,middle east
Hello gents;
Good day people,there is a knock coming from underneath the truck when driven over bumps and uneven terrains.
it is more like metal hiting metal than a knock.it is heard from the center area till backward area of the truck.i have checked bushings,trail ram,and everything related to the rear axle articulating moving parts,and nothing.the rear shocks are new and even before replacing them this kind of a knock was present.
i went under the truck,shaked the exhaust up and down left and right violently but no knock coming,and tried to move and shake the fuel tank but no sound.only noticibal play in the rear brakes caliper was noticed and
when moved by hand they r knocking but not the knock i hear.
when the truck is parked and i shake it left to right violently no knock is heard,also pushing on top of the bumper up and down shaking the truck,no knock is heard.
heat shields rattles,cat rattles,these 2 wont cause a knock.
i hit the rear bumper with force with my hand, no knock heard.
i have narrowed the knock like when something hit the drive shaft,like when there is play in the shafts and they rattle on bump,well this knock i hear is very close to the play in the shafts like when u turn a wheel off the ground and hear the knock,it is kind of rattling knock.
checked the shafts there is little play in them i assume it is normal,what could be hitting the drive shafts to make it knock in case the drive shafts are the cause.
i am getting dizzy trying to figure it out,i even took it to the specialist and checked everything from down with no success.
when car is on descents and hitting a bump it will not knock,only when car is leveled and hitting a bump,or going up a hill and hitting a bump,i will hear the knock.when windows are closed u can't hear anything.
Ideas?
thank you gents.
Good day people,there is a knock coming from underneath the truck when driven over bumps and uneven terrains.
it is more like metal hiting metal than a knock.it is heard from the center area till backward area of the truck.i have checked bushings,trail ram,and everything related to the rear axle articulating moving parts,and nothing.the rear shocks are new and even before replacing them this kind of a knock was present.
i went under the truck,shaked the exhaust up and down left and right violently but no knock coming,and tried to move and shake the fuel tank but no sound.only noticibal play in the rear brakes caliper was noticed and
when moved by hand they r knocking but not the knock i hear.
when the truck is parked and i shake it left to right violently no knock is heard,also pushing on top of the bumper up and down shaking the truck,no knock is heard.
heat shields rattles,cat rattles,these 2 wont cause a knock.
i hit the rear bumper with force with my hand, no knock heard.
i have narrowed the knock like when something hit the drive shaft,like when there is play in the shafts and they rattle on bump,well this knock i hear is very close to the play in the shafts like when u turn a wheel off the ground and hear the knock,it is kind of rattling knock.
checked the shafts there is little play in them i assume it is normal,what could be hitting the drive shafts to make it knock in case the drive shafts are the cause.
i am getting dizzy trying to figure it out,i even took it to the specialist and checked everything from down with no success.
when car is on descents and hitting a bump it will not knock,only when car is leveled and hitting a bump,or going up a hill and hitting a bump,i will hear the knock.when windows are closed u can't hear anything.
Ideas?
thank you gents.
