vibration under acceleration - need help w/ diagnosis - Saab 9-5 Bulletin Board - Saabnet.com
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vibration under acceleration - need help w/ diagnosis
Posted by tonystarks (more from tonystarks) on Mon, 5 Sep 2011 04:02:44
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All,
I read through previous posts looking to diagnose my problem, but symptoms seemed to be different from mine.
2002 9-5 Aero with 130k miles has the following issue. Please note I just got the auto transmission rebuilt and throttle body cleaned and is likely related.
- Car has no issue when accelerating from stand-still (0 mph) and if accelerating all the way up as long as foot is on the gas.
- when I let off the gas momentarily and go to accelerate again, the car vibrates/shutters until I hit the gas more which it then overcomes the vibration.
- The car will do this about 80% of the time with the situation described; and I believe the 20% when it is ok is because I happened to accelerate slightly quicker after having my foot was off the gas.
The vibration is very pronounced (can be felt by passenger) and will occur until I hit the gas harder to overcome the issue. Otherwise the car could vibrate for 5-10 seconds.
I am going back to my mechanic as I believe it is related to work completed later this week, but would like some idea to what the issue may be.
Thanks to all in advance for any support.
Tony S.
9-5 Aero (2002) w/ 130k miles
posted by 72.39.8...
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