Coilovers query!

[MiniAkcent10]

Aoa guys
I bought tiens coilovers for my corolla 2012 a few months back
Used them for a month and removed them because of very disturbing clunking noise from front right coilover when breaking or turning the car
And the back coilovers are fine when no one sitting on the back seat, but when someone sits, a huge sound can be heard even on a small bump like "thakk" i checked the shock absorbers and they are fine. What could be the problem? I've got them fitted from different mechanics and lost a huge money on labor. Please help

[MiniAkcent10]

And yes the sound from back increases as the ride height increases

[Hassan1991]

sound is because of less movement....coilovers not only drops the ride it also decreases the movement by becoming hard. this less moment is pretty bad for chassis....all the impact goes directly to the wheels and control arms bushes and then to the chassis....(it doesn't mean these chassis are weak)....but these things decreases control arms bushes life. Should check them my be someone goes bad between this "thakk" sound is the TAG of coilovers

[MiniAkcent10]

I have only back coilovers installed now (as corolla is way too high from back) the back coilovers have 3 rings two beneath the spring and one at the lower end.. some says that the two rings beneath springs are used for height adjustment but moving them up no doubt raises ride but also compresses spring which end up in a bouncy and noisy car, and some says the lower end ring is loosened and rotate coilover to adjust height. I had another set of coils that had only two rings, these have 3
Please tell the right way to adjust them

[Hassan1991]

There are types of coilovers eg 2 way adjustable, 3 way adjustable having independent height control etc.
Can you share a pic of your coilover?
Consider a normal coilovers when you drop the ride pump rod goes down it decreases the movement (it is made for this purpose) when you lift it up pump gets more movement to move. Spring is always facing the same tension whether car is dropped or lifted actually pump is responsible make the ride stiff.
Damping or hardness of pump can be adjusted by a nob on the top of the coilover. Now in 3 way adjustable coilovers the hole pump goes up and down so movement is always same independent of the ride height.

[MiniAkcent10]

Check the back coilovers have 3 rings.. i move the rings that are below the springs, i move them upward to lift car and move them down to lower the car.. but when the rings are lifted about middle of the lenght, my car doesn't even move on plain roads and even on uneven surfaces it sounds like a bad shock or u can say it feels like something hitting the area behind seat. I hope u understand

[Hassan1991]

looks like rear doesn't have damping option
when you move the last third ring the hole mechanism move ?
if yes then move the two ring which are holding the spring to the top ( like you increase the height) then adjust the third ring to lower the hole mechanism down.
ap dekh lo vesa hi kitni kam movement space hai pumps ma.

[MiniAkcent10]

To where should i adjust the last ring to increase height?

[Hassan1991]

Adjust 2 rings connected to the spring high above.
Then lower you ride by adjusting 3rd ring.

[MiniAkcent10]

Look It's already lowered from back, i want to lift it a bit but moving the two rings up make it too much bouncy and noisy

[Hassan1991]

It's still high.
Then keep those 2 rings as they are and try to adjust 3rd ring for lifting.
Looks like pumps are weak.

[MiniAkcent10]

Front has genuine shock absorbers with genuine springs.. back has coilovers, i checked all coilovers they are fine

[Hassan1991]

But jerks are because of weaj pump
If you adjust the ride by third ring you spring and pump moment remain same. Just car goes low.

[MiniAkcent10]

What's actually the pump is? Is it the rod of shock?

[Hassan1991]

Yes its shock

[MiniAkcent10]

But they are fine.. i got them checked

[Hassan1991]

then try as i said and let me know

[MiniAkcent10]

I'll try it tomorrow for sure and thanks a lot for your help.

[Hassan1991]

your welcome

[MiniAkcent10]

Adjusted them using 3rd ring, there was a lot of thread underneath but the problem is same, ride is okay on smooth roads but it is noisy on speed bumps