We've replaced the old clutch on our Toyota Land cruiser prado 2002 to a new one and when we put in gear there's a very loud noise, it sounds like a chain spinning all around coming from the gearbox. I need help. *Excuse my english.
It sounds like the clutch is not fully disengaging the transmission. So, when you shift you are still transmitting power to the transmission and the dogteeth are spinning too fast relative to each other. The clutch needs to be fixed, and it could be multiple things, from the hydraulics (cheap) to having to replace/reinstall the whole clutch again (expensive). But if you just had the clutch replaced, then I would take it back.