My 1998 Lumina sedan is oversteering or floating at 55mph, any advice.

1998 CHEVROLET LUMINA
102,000 MILES
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SHUMLA
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My 1998 lumina has had the tie rod ends, lower ball joints and strut bearing assembly and race replaced as well as having a wheel alignment. After all of this the car wants to float or sway or oversteer itself when you reach 55 mph. The chevy dealer said the rubber bushings are in need of replacement (for $ 1000 bucks), and throws his hands up and offers no solution. Could it be the Rack & Pinion or the rubber bushings causing this problem?
Nov 21, 2011 at 1:23 AM
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SATURNTECH9
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Have you checked the tire pressure?Over inflated tires will do that.
Nov 21, 2011 at 1:41 AM
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SHUMLA
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Yes, I had two new tires put on the back of the car, and I took the two older tires off the back and put them on the front. At 55mph if I touch the steering wheel in order to bring it back to center, the steering is so reactive it oversteers?
Nov 21, 2011 at 4:42 PM
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SATURNTECH9
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Have you checked the tire pressure yet?you said you would if you did check it what is the tire pressures?
Nov 21, 2011 at 5:20 PM
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SATURNTECH9
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Also what rubber bushings?Do you have a copy of the before and after measurements from the alignment?
Nov 21, 2011 at 5:22 PM
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SHUMLA
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The tire psi is 32 on both. I'm not sure what rubber bushings the service rep. at the chevy dealership was refering too. Whatever is located in the suspension, he quoted me $1000 to replace them>
Nov 21, 2011 at 5:52 PM
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SATURNTECH9
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You should have checked the pressure on all four tires.Also do you have a copy of the alignment specs?Can you you find out what bushings?
Nov 21, 2011 at 6:00 PM
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SHUMLA
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The tire psi is 32 on all 4 tires, the rubber bushings he was refering to was the control arm bushings, the swaybar and the mounting bushings. the alignment is as follows, Camber range, 0.2 to 1.2, Left Front is at 1.2, Right Front is at 0.9, Caster range is 1.3 to 2.3 Left Front is at 1.6, Right Front 2.4,
Toe ranger -0.10 to 0.10, Left Front is at 0.02, Right Front 0.02,

Rear Camber range is from -0.7 to 0.4, left rear is at -0.1, right rear is at -0.4, Rear Toe range is -0.20 to 0.10, Left Rear toe is at -0.27, right rear toe is at -0.12, Total Toe is -0.39, Thrust Angle is at -0.08. These are the specs. Let me know what you think, thanks for your help.
Nov 22, 2011 at 4:36 PM
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SATURNTECH9
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Do you have 15" or 16" wheels?
Nov 23, 2011 at 5:24 AM
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SHUMLA
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15"
Nov 23, 2011 at 12:48 PM
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SATURNTECH9
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Here are the specs i have which are different then the specs you give.
Image (Click to enlarge)
Attached Media
Nov 24, 2011 at 2:26 AM
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SHUMLA
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I'm unable to view the specs you sent me. When I click on the spread sheet the sheet enlarges but the "Add A Reply" message box pops up and covers the info.
Nov 24, 2011 at 9:10 PM
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SATURNTECH9
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It pops up just fine when i click it on my phone.Give me your email and i will email it to you.You can email it me on here if you dont want everyone to see it.
Nov 24, 2011 at 9:17 PM
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SHUMLA
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[email protected]
Nov 25, 2011 at 10:29 AM
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SATURNTECH9
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I emailed it to you.
Nov 26, 2011 at 1:12 AM