Guide Indication Gururs plz
 

Ok when im moving from 1st to second occasionally i hear this clanking o-r clacking noise when i drive in-the clutch and when I change it creates still another noise such as for instance a clackin, can't really describe it...Is this because I am not bringin my car as much as a large enough RPM? i often shift at 2 rpms...but therefore i shift at 3rpms..its a truck wrangler incidentally it clacks.