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I just replaced my rear shocks on my 2001 Toyota ECHO with new ones. I'm concerned they may be defective.
The new ones are Sachs SuperTouring gas shocks. They are replacing the OEM KYB gas shocks.
The problem occurs after the car has been standing for some time.
If I push down and release the rear bumper, the car rebounds as if there is no damping in the shocks.
If I repeat this, the same thing happens.
It's not until the third time that the shocks start working.
One if the reasons I replaced the old ones is, after 45,000 miles, they had developed the same problem, as well as lack of wheel control.
I've replaced shocks (and struts) on other cars before and never had this happen.
At this point I have about 100 miles on the new shocks.
Any suggestions will be greatly appreciated.
Thanks!
I have noticed that on individual bumps, the shocks seem fine. But if there is repetitive undulations, I get serious fade and the shocks lose wheel control. As you would experience with worn out ones. Additionally, under conditions where a shock gets close to topping out, you can hear a gas noise.
It is almost as if they didn't put enough oil in the shock.
About KYB, well made but way to stiff for my taste. Sachs are german, I thought they'd be pretty good.
1 Answer
- NaughtumsLv 71 decade agoFavorite Answer
The "bounce test" you are performing is scientifically meaningless.
It proves nothing.
Motorist Assurance Program guidelines recommend replacing Original Equipment struts/shocks at 50,000 miles because testing has shown a measurable drop in performance (reduced road holding, longer stopping distances) in OE struts/shocks by the time they reach that mileage. I recommend KYB shocks and struts personally because they are the worlds largest OEM manufacturer and unlike the stuff from another large brand I won't name - the KYB stuff always fits correctly.
Forget your bounce test. Is the car handling correctly? If yes, then you are fine.
Source(s): Shop manager
