Hello everyone. I am new to the land rover world. I bought an 03 discovery with a blown engine for $2k and bought a used engine from LKQ with 83k miles. Installed it and it immediately started knocking. Swaped it out for another, installed it, and it knocked also. I have since bought a rebuilt engine from Frasier engines. The car runs and drives good finally! The only thing I have now that is driving me insane is a knocking noise coming from what sounds to be the right front only when I let off the gas and decelerate. It seems to stops making the noise at around 15mph. As long is I have my foot on the gas it's quiet. It only happens when I let off of the gas. After reading all the horror stories about front prop shafts on these I went ahead and replaced it thinking that was what it was. Noise is still there. I took it to a shop here in town where they lifted it up in the air and ran it. No noise at all. They said everything seems to look real good with the transfer case and drive shafts. They even checked the front differential fluid and it all checked out fine. No metal shavings at all and fluid was good. I want to like this car but I'm quickly starting to hate it and am getting really tired of throwing money into it. Has anyone else ever had this problem? Any help would greatly appreciated! Thanks

 

 

 

Is the knock at a rythmic frequency or random? Does the frequency of the knock change with speed (slower as the vehicle slows down)? Does the application of brakes change the noise? Does it change with temperature? Change over bumps? Have you checked the oil pressure?