car going left and right on straight line

[drill]

dear frens,

one of my car, a 97 ford lynx had undergo some restoration recently.

i've change:
- front tyres
- all four absorbers (tokico japan) standard oem including its cushion bushings an cover
- all absorber links
- all bushing for lower arms front and rear
- rear original stabilizer bar bush
- tie rod end
- and redo front and rear alignment

now my car got problem, when going straight, suddenly my car goes to the left or right a bit, but my steering is still in straight position. when taking corners, a lil bit more horror. let say im going down from a flyover, turning the steering to the left a bit, suddenly it goes like over-steer ( front of my car turn more to the left than what i intended to.

i checked my recently changed steering rack and its bushing, seems to be ok.

opinions and held needed.

 

[joshualee]

could it be your chassis problem?

 

[drill]

cant be.... it never happened before i change all this.... also never had any major accidents before... just minor scratch only...

my foreman says its the alignment.. but i cant 100% agree with him since if driving in straight line, the steering sit still in its position.

 

[EvolutionZ]

try look at tie rod end, cv joints and lower arm bushing too....no guarantee will solve yr problem but it happens to my saga many years ago BUT since u changed all the above...maybe yr tires & alignment...sometimes even new tires also possible to swirl left n right

 

[Izso]

Toe and camber problem?

 

[DanzEterna]

u got do allignment & balancing anot? & adjust yr camber too.....
cos wat i suspect previously your tire already makan one side....so therefore yr car will not go in a straight line.

 

[drill]

Thanks guys for the replies. yes i did the alignment and camber adjustments. tyres also new. so i think no issue with tyre makan one side.

i agree with EvolZ, but i have clocked almost 200km since i changed the tyres, so if tyres is the issue, it should be gone by now i guess...

today i think will try another shop to check out the alignment. any recommendation?

 

[drill]

Guys.... Ive went to 2 tyre shop today. They check the alignment... Both said ok. The last shop check all bolts, all are secured properly. Rotated the tyres, redo balancing.... Still the same. Owh btw, the last shop used manual technique.

 

[xtremeleo]

it cannot be the alignment din, sounds like a steering rack related problem. need sum checking?

 

[^pomen_GTR^]

did this car have balljoint at the front lower-arm to connect with the wheel hub/knuckle???

if yes try check that

 

[drill]

did this car have balljoint at the front lower-arm to connect with the wheel hub/knuckle???

if yes try check that

yes... i replaced that too!

 

[^pomen_GTR^]

errr...regarding your replaced tie-rod end, is it including the rack-end as well???it is 2different thing....but related and connected to each other...(*atleast on proton/mitsubishi it can be replaced separately)

not sure on your car tough....

 

[matshah]

check yr steering rack again.jack t car n shake both front tyre..n try change yr front tyre to rear.. see how

 

[leynye yamin]

rackend maybe freeplay.

 

[drill]

errr...regarding your replaced tie-rod end, is it including the rack-end as well???it is 2different thing....but related and connected to each other...(*atleast on proton/mitsubishi it can be replaced separately)

not sure on your car though....

yes bro.... changed that too... when i said restoration earlier... i mean all of the undercarriage bushing, suspension and handling related parts.... had spent more than rm2k for all of this... and all are genuine parts.

check yr steering rack again.jack t car n shake both front tyre..n try change yr front tyre to rear.. see how

yes... just had it check... the rack had no leak and the pump was working nicely. and i did mentioned earlier i had rotated the tyres.

thanks all.... but any other ideas? i really need to solve this before this weekend as im going back hometown... its a 5 hours journey with this slow car...

 

[DanzEterna]

how bout the front stabilizer bar? changed as well?

 

[^pomen_GTR^]

while stationary did your car have alot of steering free play??? (*with engine off)

if yes it could be your steering joint coupling or steering rack itself....



if no....have you checked all hub bearings?

 

[drill]

guys... thanks alot for ur support! manage to solve it. change another 2 piece of tyres, solved.

no explanation thou on why my old tyres causing the problem. no uneven wall or surface, no bengkak or anything.... its just behaving mysteriously.

 

[^pomen_GTR^]

guys... thanks alot for ur support! manage to solve it. change another 2 piece of tyres, solved.

no explanation thou on why my old tyres causing the problem. no uneven wall or surface, no bengkak or anything.... its just behaving mysteriously.

what tyre was that?thread how much left??

i've experienced some wobble long time ago if cruise below 40km/h due to cheap tyre which i think contain less cross ply than usual higher ranked tyre so when the thread less than 40% it wobble on the surface....

or the steel/nylon belt inside the rubber snapped due to age??

 

[drill]

It was solverstone m5 or evol8(cant really remember) year 2009. thread was around 60%. can still sink in a 5 cent coin.