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Shock absorber

Question : THE suspension of my 1999 Toyota Harrier "thumps" each time I go over a speedbump. My friends have advised me to change the shock absorbers, but I do not want to spend money and not solve the thumping problem. Please advise if this is indeed the correct thing to do or should I have other components checked out beforehand.

Answer : Although shock absorbers do fail after high mileages, they usually squeak and rarely "thump" and in most cases of failure on oil-gas type shock absorbers such as those fitted to the Toyota Harrier, oil leaks are commonly seen on absorbers that have failed.

The most common causes of thumps are broken upper shock absorber mountings, although worn ball joints such as suspension and steering joints cannot be ruled out.

Joint failures usually give a knocking noise instead of a thump, and if the joint is seriously worn, the knocking noise can be heard if the vehicle is rocked while at standstill.

The slack can be seen when the joint is levered. Unfortunately, you can only check for a broken top suspension mount by dismantling the entire suspension system.

 
 

Change absorbers in pairs

Shock absorber

Springs status

Inconsistent idling

Leaking absorbers

Stiff bearing

Worn absorber

Shock absorber

 

 

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