Skip the auto shop - Our mechanics make house calls

Q: How do you determine when it is time to replace the rear shocks?

asked by on

How do you determine when to replace rear shocks? Thanks

My car has 147000 miles.
My car has an automatic transmission.

A: Hi there. As a former Lexus master technici...

Hi there. As a former Lexus master technician I used the leak criteria guide provided by Lexus for the technicians to determine when to replace the shocks and struts. The guide had levels ranging from 1 (no leak) to 5 (severe leak).

The first "level" of leak that was determined to be in need of replacement was level 3. A level 3 leak, according to the guide, is oil that has run from where the shaft comes out of the housing and has met the same area where the mounting bolts are located; levels 4 & 5 go beyond this level and have oil dripping. If you see a trail that is running to the bottom of the shock, then it's time to replace it.

Also, there is the bounce test for shocks and struts that do not have a leak. Bounce the vehicle at one end and watch how many cycles it takes for it to stop; 3 cycles was the general rule of thumb and any more than that meant the shocks/struts needed to be replaced. I recommend having a professional mechanic, such as one from YourMechanic, assist you with a safety inspection and a shock replacement if needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Oil drian plug cracked tried to extract it but it wnet into oil pan, does the oil pum have protective screen preventing damage?

There is always the possible chance that the piece could get into the opening in the oil pump pickup tube. It will not make it past the screen but can partly block the opening where the oil is sucked into...

Q: Multiple leaking parts

CV axles leak from the a dust boot. Inside the dust boot is a special high temperature grease that provides lubrication to the joint. If the grease leaks, the joint will be damaged from the lack of lubrication and extreme...

Q: Getting Engine light code P0430

The definition for the code P0430 is a problem with the catalyst or the sensors that keep track of its operation. An experienced technician will, such as one from YourMechanic, be able to identify the problem component. In many cases,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...