grinding noise

when i start up my car it makes like grinding sound somewhere under the hood but i dont know where it is coming from. also when i am driving i can sometime hear the grinding sound. like wheni hit 3000 rpm. anyone know whats wrong or why it is making that sound? thank you

If its 5 speed and sitting steal making a sorta like grind noise well like a bearing just spinning but loud id say throwout bearing...If it grinds when you shift you have syncros going bad in tranny...

Need lil more info on it tough to tell..

its a 5 spd.. well when i shift gears it doesnt make that sound but like when i hit like 3000rpm it makes that grinding sound so i shift gears and it goes away then i hear it again then i shift...etc but like when i first start off the car it makes the same sound...?

Could be one of your belt pulleys out of alingment and hitting something.

With the engine idling, get someone to rev your car up to 3000rpm, if you hear grinding or see one of the pulleys wobbling, then thats the problem. It can usually be fixed by tightening the bolt in the center a little bit.

ok thanks...my friend said it cant be the transmission because when i start up the car im not in gear...he also said it could be the fan hitting against something????

i'm not sure if i have the same noise or not, mind is auto and i can hear it at 1500rpm and about 2800rpm

i just realize something.. when i got the car it was drop in the front so and one time i went down the driveway ..i accdently hit the drop..cant explain i think you know what i mean...since its all low in the front... maybe i hit something and now it cause the grinding sound??

when i push on the cluch it doesnt make that sound....because when i first start off the car in the mourning i turn it on and wait for the car to warm up and sometimes leave the car...while outside i can hear that grinding sound.....i pop the under but dont know where its coming from?

Maybe....you exhaust heat sheild? Look under your engine to see if anything is loose (if you can reach it). Or it might be a splash sheild from the bumper thats loose. Idk if this it it, but it kinda makes sense.

if you have an Intake on it... it could be the filter vibrating on something... thats what happened to my dads car