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Driveline vibration

Tiny
FEDROWG
  • MEMBER
  • 2001 SATURN SC2
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 72,000 MILES
I have a 2001 saturn sc2 with dohc engine and 72k, auto. Trans. Vibration when cutting wheel to the left upon acceleration. Vibration is similar to riding a rumble strip but not as intense. I have changed both driveshafts and both front spindles but the vibration is still present. I have checked the top motor mount and the bottom trans mount on the drivers side and both look good. Any ideas about where to look next? Is there acommon problem that occurs in many s-series saturns?
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Friday, December 3rd, 2010 AT 12:42 AM

5 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
First of all thank you so much for your donation. There is a common problem from what you described for the S model saturns and that would be a bad upper motor mount the one by the valve cover. Are you sure you checked it?How did you check it?
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Friday, December 3rd, 2010 AT 2:15 AM
Tiny
FEDROWG
  • MEMBER
  • 4 POSTS
I removed the mount and visually inspected it. It appeared to be intact with no cracks or seperation of the rubber from the metal. Could the rubber portion be worn yet appear to be ok? Are there any other mounts that I could check? What about the intermediate shaft? What about the transaxle output shaft bearings? Thanks.
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Friday, December 3rd, 2010 AT 2:40 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
It sound's just like a mount your car has four. The upper engine one there is a lower engine one below your crank pulley. There is a upper transmission one below your air box where your filter goes in and the there is a lower transmission one that goes between your transmission and sub frame. The upper mount's compress and sometimes tear. Is there anyway you take the upper mount out and take a picture of both side's of the rubber side of the mount and post it for me to see it?
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Friday, December 3rd, 2010 AT 5:04 PM
Tiny
FEDROWG
  • MEMBER
  • 4 POSTS
I found a new top motor mount for 15 bucks so I installed it. Still had vibration. Finally I removed the new rf driveshaft and replaced it for the 2nd time. Good results. The first new driveshaft from advance auto parts was either faulty from the get go or it failed immediately after installation. Thanks for the advice. I will use this site in the future.
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Monday, December 6th, 2010 AT 1:08 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Glad to hear you got it figured out bad axle's are a pain to diagnose especially when you get bad one's right out the box.
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Monday, December 6th, 2010 AT 1:32 AM

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