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loss of power on acceleration. V50

posted by  a4ty4d on  Thu Sep 19 13:12 CST 2019
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last visit: Sun Apr 27 12:43 CST 2014
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I have a non turbo 2007 v50 with 161,000 miles. Presently it acts like it is missing on acceleration or a hill climb. I can maybe describe it as a chattering feel and loss of power on acceleration. What can It be? coils? break in vacuum? could it be a timing issues? I just had the timing belt replaced. Any ideas?








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    loss of power on acceleration. V50

    posted by  KlausC on  Fri Sep 20 10:15 CST 2019
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    last visit: Fri Oct 24 10:15 CST 2014
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    Timing is computer controlled and if it 'off' then you would have a check engine light.

    Look for vacuum leaks. How is your MPG? How about spark plugs?








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      loss of power on acceleration. V50

      posted by  a4ty4d on  Fri Sep 20 18:42 CST 2019
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      last visit: Sun Apr 27 12:43 CST 2014
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      plugs are new and timing belt are new. MPG is bad. where might I look for vacuum leak? could a poor seal on the gas cap create a vacuum issue? but that too would cause the check engine light to come on.







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        loss of power on acceleration. V50

        posted by  KlausC on  Sat Sep 21 09:59 CST 2019
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        last visit: Fri Oct 24 10:15 CST 2014
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        Intake manifold vacuum, not gas fume vacuum. You are looking for unmetered air entering the intake manifold, so the small vacuum lines on the front of the manifold, a loose air intake line after the air filter. If you have a turbo, check the 4 vacuum lines around the boost controller.






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