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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-22-2008, 04:07 PM   #1
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I've got a brief question. I have a vibration from the RF of my car. It doesn't follow engine RPM but does follow vehicle speed. It'* worst at 70MPH. I replaced everything under the sun suspension wise @ the RF as well as rotated the tires. I even went as far as swapping out the rims with no change. Does NE one have any ideas for me? Oh and this is the second set of tires for this. :(
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Old 02-22-2008, 04:11 PM   #2
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you did not mention brakes, but I have had rotors do this. they only caused vibrations at certain speeds.
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Old 02-23-2008, 02:15 PM   #3
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Quote:
Originally Posted by sonoma_zr2
you did not mention brakes, but I have had rotors do this. they only caused vibrations at certain speeds.
I had a caliper that would drag and then heat up the rotor and cause a vibration from the rotor and caliper interaction.

I would stop the car quickly using the emergency brake that was rears only and compare the temperature of the front rotors. Left slightly warm, right HOT.

Replaced calipers and rotors and new pads after I put up with it for 15K miles waiting for them to wear out.
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Old 02-23-2008, 06:41 PM   #4
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What all did you replace suspension wise? Have you tried the wheel bearing yet?
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Old 02-25-2008, 07:38 AM   #5
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I have replaced:
Strut & bearing plate
Wheel bearing
Rotor
Caliper
wheel
tire (replaced 2x as well as balanced multiple times)
Tires are Cooper Cobra Lifeliners
CV axel

Ball Joint is tight as well as the tie rod ends those haven't. I'd replace them if I thought it would do any good.

I've rotated the tires so many times it'* not funny. If you have any ideas to help me isolate this please help.
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Old 02-26-2008, 12:55 AM   #6
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did you try an alignment?
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