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post #1 of 8 (permalink) Old 15-04-2017, 13:04 Thread Starter
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Seized rear shock absorbers

Just had a look at a low km 75 but it appears both rear shocks are seized solid.
The car sits fine but when you go over a bump it's jarring.
The back end has hardly any give even when pushing it.
Owner reckons it happened after getting new rear tyres fitted
Anyone heard of anything like this on a low km car (80k km)
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post #2 of 8 (permalink) Old 15-04-2017, 13:20
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What I can see is that gas shocks can become hard is gas expands on high temperatures and thus has no way of compression back for absorbance? Maybe to see if it will play along on colder temperatures?
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post #3 of 8 (permalink) Old 16-04-2017, 12:01 Thread Starter
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Did a bit of reading,evedently it seems its documented that some cars with cheap shock absorbers or old ones, when the shock absorber is fully extended, damper lock can occur. Seems to happen after the cars been serviced using lifts that support the car under the jacking points rather than the drive on type.
The damper in the shock becomes loose when extended and when the car is put back down on its own weight it crushes the damper and seized the shocks up
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post #4 of 8 (permalink) Old 16-04-2017, 12:53
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I'd have expected the car to sit wrong if this had happened.
The sills wouldn't be parallel to the road.
Does the body obviously look too high at the rear?

TC
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post #5 of 8 (permalink) Old 16-04-2017, 14:56
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Quote:
Originally Posted by genpk View Post
Did a bit of reading,evedently it seems its documented that some cars with cheap shock absorbers or old ones, when the shock absorber is fully extended, damper lock can occur. Seems to happen after the cars been serviced using lifts that support the car under the jacking points rather than the drive on type.
The damper in the shock becomes loose when extended and when the car is put back down on its own weight it crushes the damper and seized the shocks up
I also was thinking about this possibility, but as T-Cut said, car would need to sit higher on the rear end.
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post #6 of 8 (permalink) Old 16-04-2017, 18:43 Thread Starter
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Strangely enough the car looks to be sitting correctly and externally appears to look normal, just when the rear goes over a bump it's rear it jarring hard .
Having said that ,reading up on instances it appears owners (Hyundai and Honda owners) where this has happened seemed to also not notice any physical difference in appearance until they drove it .
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post #7 of 8 (permalink) Old 18-04-2017, 21:28
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If it has self levelling rear shocks this is how they tend to fail. These were an option weren't they on the 75?
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post #8 of 8 (permalink) Old 19-04-2017, 08:11 Thread Starter
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self leveling shocks I think were only fitted to cars fitted with xennon lights or tourers ?? or somthing like that.? Im sure somone with more knowledge re this will clarify this.
This car has standard lights.
This damper lock appears to usually happen to cars with either old or cheap quality shock absorbers so my guess as its only done 80,000 km they probably failed due to old age and lack of use, not wearing out.
As they say,its better wear out than rust out !!!
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