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Vibration at Idle and Acceleration

Tiny
VOLVODRIVER
  • MEMBER
  • 2000 VOLVO V70
  • AWD
  • AUTOMATIC
  • 110,000 MILES
I have a 2000 Volvo V70 XC. Recently there has been a large amount of vibration both while idling and even more so when accelerating. The vibration is to the point where I don't feel comfortable driving the car, feels like the whole thing is going to fall apart at high speeds. My first thought was the motor mounts so I bought new mounts and had them replaced but the vibration is still there. Would this be caused by the drivetrain?
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Tuesday, January 25th, 2011 AT 7:57 PM

3 Replies

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Is the check engine light flashing when under load?
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Thursday, January 27th, 2011 AT 6:24 AM
Tiny
VOLVODRIVER
  • MEMBER
  • 2 POSTS
Yes. There have also been several occasions where it seemed to have trouble shifting when driving at high speeds.
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Thursday, January 27th, 2011 AT 1:38 PM
Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
OK have the engine control module scanned for codes to see which cylinder is misfiring since that is what a flashing check engine light indicates. The most likely cause will be a bad ignition coil. Check coil for proper spark, check spark plugs and make sure you are using Volvo spark plugs. Let me know what you find.
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Friday, January 28th, 2011 AT 5:37 AM

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