my '87 iroc, when under braking or acceleration, feels like the back end of the car is moving side ways. could it be panhard bushings or maybe a caliper locking up? please help.

 

Well I would not suspect the brakes if it happens under acceleration and braking. Perhaps you have a bent rear suspension component? Panhard bar or LCA?

 

Get that checked out man because i had a buddie of mine twist his frame with a similar problem!!

 

Have you tried pushing on the rear side of the car when it's parked to see if it sways really bad? Altho I suppose if your shocks/springs are shot, the car would sway horribly too.

Visit a suspension shop.. maybe you can snag a free estimate from 'em. After they tell you what's wrong, gasp, and say "Wow I don't have that kind of cash. I'll take my chances." Then come back here and fix it- unless of course it's not expensive for them to do it.

Hey how's your sway-bar end-links? Are they there?

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.v6fbody.com mailbags

 

Try getting a girl in the back seat and see if the car behaves the same in Park.

 

Also look into the lower control arm bushings.

------------------
Rob
'86 TA 305 TPI

 

LMAO.....lets hope so.....

 

I CHECKED THE TORQUE ARM. THERE IS ALOT OF SLACK BETWEEN ARM AND REAR END. IS THERE SUPPOSED TO BE A BUSHING IN THERE? BECAUSE THERE ISNT ONE. THANKS FOR THE HELP.

 

I know somebody has had this trouble before.

 

YES THERE SHOULD BE A BUSHING , You should not be able to move the torque arm . There is a rubber bushing at the trans were the torque arm mounts .

 

The TA bolts solidly to the rear axle, the bushing is only at the transmission end.

I know it sounds obvious, but check your tire pressure.



------------------
Ryan MacEwen Pruyn
MacEwen Motorsports

1987 GTA 350 6spd, White OEM instruments, 17" Borbet Type A's, 275/40ZR17's, 255/45ZR17's, Koni Sport Adjustables, Eichbach Sport Springs, Poly U, everywhere, Guldstrand Engineering Panhard rod, LCA's

 

My rear end used to slide from side to side. I went through alot of sh*t rebuilding the entire rearend only to findout the one of my panhard rod bolts was loose. I tightened up everything and it feels MUCH better. Just a thought.

 

Hm, speaking of tightening bolts..

I forgot- You know the track bar (or panhard rod, whatever) brace? It goes from the bracket on the passenger side up to the body of the driver's side. There's three bolts that hold that brace up, and one day I crawled under the car to see two of them missing. I replaced 'em, and the car felt tighter.

Altho I never felt a serious problem like this guy's talking about... so I doubt it's these bolts, but they're worth a look.

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.v6fbody.com mailbags