Rear suspension problem

[modmonster2008]

Hey, I picked up this 89 Turbo targa a few weeks ago and I noticed something when i go over a bump or so. Specifically when the road is bumpy the rear end of the car feels like its vibrating and rattling a lot like its going to fall apart, as well as when the rear driver side wheel goes over a bump the whole rear end feels like it swerves while the front end of the car is still straight..? The suspension does not sound blown, subframe does not look cracked or damaged in any way, what should I look for that can be causing this? The TSRM doesnt seem to be showing any detail in the rear end swerving over a bump. Let me know guys, thanks!

 

[mkiiichip]

Check for play in the bushings in the knuckle.

 

[modmonster2008]

I just checked out the stabilizer bar looking things on each side of the car, looks like the driver side one is bent? Is there anything else i should check besides that?

 

[hvyman]

I would replace that and see.

I'd also retorque the subframe bushing. That's the first thing I do when I get a car.
Iirc there either 95ftlbs or 195 ftlbs. But the term will have the spec. On my phone or I'd look an I'm lazy.

 

[laotionracer101]

Lol yes thats bent

 

[modmonster2008]

The sway bar end links on the 89+ Supras look like plastic don't they? Do you think the pre-89's would work? They seem like theyre made out of metal and seem more sturdy than the plastic ones? Just a thought

 

[hvyman]

Is it broken? The links is just a Point to hold it. As long as it's not broken it's fine.

 

[modmonster2008]

No it does not seem to be broken. But i was just wondering, saves you from possible later on breakage? Since it is only plastic looking the metal ones should last longer? But for now I would replace the bent part. Is there a specific name for that? So I would know where to find it on the list of parts the yard gave me.

 

[SupraCorwin]

My car does the same thing and it is infinatly more noticable with the targa off. All of my bars appear to be unbent, i havn't looked into the bushings yet.

 

[hvyman]

Its the Stabilizer arm.
http://www.cygnusx1.net/Supra/Library/EPC/291420/catalog.aspx?F=4804&P=1

The plastic ends dont break. Theyve been on the car for the past 20 years as well.

 

[modmonster2008]

Yeah they seem pretty sturdy on there. Ill replace that stabilizer arm and see any changes made

 

[modmonster2008]

Bump, the stabilizer bar on the driver side has been replaced, car still has a slight sway to the right over bumps but not as serious as before, what else should i check for before getting an alignment on all four wheels?

 

[hvyman]

Have you checked the torque on everthing? Like subframes?

 

[suprastroker88]

Hey, I picked up this 89 Turbo targa a few weeks ago and I noticed something when i go over a bump or so. Specifically when the road is bumpy the rear end of the car feels like its vibrating and rattling a lot like its going to fall apart, as well as when the rear driver side wheel goes over a bump the whole rear end feels like it swerves while the front end of the car is still straight..? The suspension does not sound blown, subframe does not look cracked or damaged in any way, what should I look for that can be causing this? The TSRM doesnt seem to be showing any detail in the rear end swerving over a bump. Let me know guys, thanks!

when my rear end was wiggly and stuff, i looked and found out my rear subframe was cracked in 3 places......

 

[LordDigital]

I would replace that and see.

I'd also retorque the subframe bushing. That's the first thing I do when I get a car.
Iirc there either 95ftlbs or 195 ftlbs. But the term will have the spec. On my phone or I'd look an I'm lazy.

That is interesting ,I could not find any specific torque specs these bushings in the TSRM. In which section did you find these?

 

[Moy]

That is interesting ,I could not find any specific torque specs these bushings in the TSRM. In which section did you find these?

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=MA&P=12

 

[LordDigital]

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=MA&P=12

Thanks man. So the correct torque figure is 133 ft-lb for the rear and 94 ft-lb for front - I used to torque the rears to 20kilos on nylon spacers (which is closer to 150 ft-lb)... i was close