2005 Volvo XC90 Hesitation/lurching on acceleration

2005 VOLVO XC90
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BUCKEYEPHILLY
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Engine Performance problem
2005 Volvo XC90 Front Wheel Drive Automatic 105000 miles

5 Cylinder XC90 - Car has started to hesitate/lurch/vibrate when you press the accelerator. Doesn't matter if it is from a dead stop, or if you are already in motion. If you press lightly, the problem isn't noticeable, but if you press a little more (to accelerate more) the hesitation/vibration is triggered. Any thoughts?
Aug 8, 2010 at 4:38 AM
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JIS001
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Has the check engine light come on? Also does the light flash when you accelerate hard?
Aug 8, 2010 at 3:04 PM
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BUCKEYEPHILLY
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[quote:50a9473e58="JIS001"]Has the check engine light come on? Also does the light flash when you accelerate hard?[/quote:50a9473e58]

The check engine light was on a couple weeks ago, but seemed to be corrected by re-securing the gas cap. It hasn't come back on since.

There was just one time that the check engine light flashed 3 times as I had to accelerate hard as I was driving up a hill. The vibration was also most intense during this stretch of road.
Aug 9, 2010 at 12:22 AM
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JIS001
  • ✓Experienced Mechanic
  • 3,412 POSTS
When the light flashes it indicates there is a severe misfire that can damage the catalytic converter. Have the engine control module scanned for codes and see what cylinder is misfiring. If it is only one cylinder then most likely you are going to have a bad coil. Let me know what codes you have.
Aug 9, 2010 at 10:08 AM
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