How to Tell if Rear Coil Springs gone Bad?
Discussion
Hi,
I recently bought a 2003 Kia Sorento (with normal shocks - not SLS). While on small road humps and pot holes, It's rear side has more rough ride (rear passenger gets hip pain!!) . It jumps and lands, not smooth, hits back so hard. It feels like the wheels are directly fixed to the chassis without a suspension system.
Is this the sign of worn coils?
Many thanks in advance
I recently bought a 2003 Kia Sorento (with normal shocks - not SLS). While on small road humps and pot holes, It's rear side has more rough ride (rear passenger gets hip pain!!) . It jumps and lands, not smooth, hits back so hard. It feels like the wheels are directly fixed to the chassis without a suspension system.
Is this the sign of worn coils?
Many thanks in advance
The springs support the car and the shock absorbers control the springs. If the dampers fail there is nothing to control the compression or rebound of the spring meaning that big bumps can easily fully compress the spring and you'll hit the bump stops making it feel as though you basically have no suspension. In normal driving the uncontrolled springs will also cause a bouncy and nauseating ride for rear passengers.
Thanks! The current shocks are KYB gas ones - some pics below.
Back of the car isn't bouncing excessively - no bouncing at all! I don't think if the worn upper/lower suspension arms contributing anything to cause those problems, along with the bad shocks?
Yes, the pair. I gave a bell to the car dealer from where I got the car from and he has agreed to replace them both + the leaking fuel tank.
Back of the car isn't bouncing excessively - no bouncing at all! I don't think if the worn upper/lower suspension arms contributing anything to cause those problems, along with the bad shocks?
Yes, the pair. I gave a bell to the car dealer from where I got the car from and he has agreed to replace them both + the leaking fuel tank.
I imagine it has a pretty basic trailing arm rear suspension so there's not much to go wrong there however if the rear subframe mounting bushes are gone that will produce a noticeable metal-on-metal knock. It won't cause the very bad ride you're describing though.
KYB are an aftermarket brand IIRC, I'm not sure if they're any good- being that they aren't factory there is always the chance that the wrong shocks have been fitted in the past.
If the rear ride height looks OK and equal both sides then prime suspect must be the shock absorbers.
KYB are an aftermarket brand IIRC, I'm not sure if they're any good- being that they aren't factory there is always the chance that the wrong shocks have been fitted in the past.
If the rear ride height looks OK and equal both sides then prime suspect must be the shock absorbers.
Edited by HustleRussell on Wednesday 3rd May 10:40
No knocking noise from anywhere. I checked all the bushes with a pry bar and its all good. Peddders ( http://www.pedders.co.uk/kia-sorento-20022007-rear... ) do SLS to normal shocks conversion. From there website I checked the wheel-to-wheel arch measurement, which is 720mmm and its correct on mine.
Yes, its rusting heavily but luckily metal isn't falling off yet. I have to give to car washers to do a thorough underbody wash and then Waxoyl treatment. And do this again just before the winter. Some local garages do this for cars. I hope this treatment will control/minimise rusting further? Full underbody coating will cost me circa £1300!
Yes, its rusting heavily but luckily metal isn't falling off yet. I have to give to car washers to do a thorough underbody wash and then Waxoyl treatment. And do this again just before the winter. Some local garages do this for cars. I hope this treatment will control/minimise rusting further? Full underbody coating will cost me circa £1300!
paul.deitch said:
I have the same car, same problem. Definitely dampers. Replace in pairs. The fronts are probably shot too so do them as well if the car dips on braking. Top nuts on rears were really rusted...
Paul, was yours sorted after replacing both rear dampers, no more bouncy ride at the back? I guess yours is XS model as well, so was it normal shocks or or SLS?Cheers
Yes absolutely normal now. Wish I had done it a year ago as it didn't help my wife's back hitting gigantic speed humps in Portugal last summer. Got to admit that the hammer blow surprised me as well and stopped to check that the car wasn't totally f-ed.
Yes standard suspension and automatic. Doing the fronts as well made it feel more secure when cornering and stopping. I'm running M+S/ W+S tyres as I'm living in Germany and can't be bothered with the annual hassle of changing.
Previous owner was either a farmer or off-roader as the tank guard is BENT and the underside was/is still full of earth and there are scratches all over. MOT/TUV next week so we'll see...
Love it although it is a bit juicy.
Yes standard suspension and automatic. Doing the fronts as well made it feel more secure when cornering and stopping. I'm running M+S/ W+S tyres as I'm living in Germany and can't be bothered with the annual hassle of changing.
Previous owner was either a farmer or off-roader as the tank guard is BENT and the underside was/is still full of earth and there are scratches all over. MOT/TUV next week so we'll see...
Love it although it is a bit juicy.
Glad to hear all sorted. May I ask , whats that ' I'm running M+S/ W+S tyres'? Mine has 70 think tyres. I dont't think part worn ones are that expensive?
My underbody has loads and loads rusting. I'm gonna give it a Waxoyl treatment. I have disabled the TCCS power supply (2WD conversion) so it's okay on mileage
My underbody has loads and loads rusting. I'm gonna give it a Waxoyl treatment. I have disabled the TCCS power supply (2WD conversion) so it's okay on mileage
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