Hi I’m an owner of a Toyota Land Cruiser Prado 150 TZG 2012 model 4L petrol ex Japan and I have had this car for a year.
I’ve had this knocking sound coming from the bottom on severe corrugation and rough roads. After consulting numerous mechanics including Toyota Kenya and changing several parts nobody has managed to pinpoint the issue.
I have converted my suspension from the stock Active Height Control (AHC) to Monroe shocks and King Springs to be better suited to our roads.
I initially had the Dobinsons suspension (from which the knocking sound was also coming) and changed to Monroe for a more comfortable ride however the knocking sound still remains.
I changed the following as advised:
Lower control arm bushes
Lower ball joints
NEW Steering rack fitted
Stabilizer link bushes
Brand new suspension - converted from AHC to standard suspensions (Monroe) both shocks and springs
Brand new BF Goodrich AT ko2 tyres
After changing all of the above the knocking sound is still there
All body parts and other components have been tightened.
This Sound persistently comes on severe corrugation (louder downhill) and on rough roads. On smooth roads car is silent.
What could possibly be the issue?
Any help would be highly appreciated
I’ve had this knocking sound coming from the bottom on severe corrugation and rough roads. After consulting numerous mechanics including Toyota Kenya and changing several parts nobody has managed to pinpoint the issue.
I have converted my suspension from the stock Active Height Control (AHC) to Monroe shocks and King Springs to be better suited to our roads.
I initially had the Dobinsons suspension (from which the knocking sound was also coming) and changed to Monroe for a more comfortable ride however the knocking sound still remains.
I changed the following as advised:
Lower control arm bushes
Lower ball joints
NEW Steering rack fitted
Stabilizer link bushes
Brand new suspension - converted from AHC to standard suspensions (Monroe) both shocks and springs
Brand new BF Goodrich AT ko2 tyres
After changing all of the above the knocking sound is still there
All body parts and other components have been tightened.
This Sound persistently comes on severe corrugation (louder downhill) and on rough roads. On smooth roads car is silent.
What could possibly be the issue?
Any help would be highly appreciated