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2006 BMW 523 acceleration

Tiny
SNARE
  • MEMBER
  • 2006 BMW 523
  • 90,000 MILES
Just bought the car. Loses power going up hill. Loses power when accelerating past 4000rpm on a straight. Doesnt lose power when accelerating down hill even past 4000rpm however power is lower than it should be even down hill. What could it be? Please reply
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Monday, July 8th, 2013 AT 7:00 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Since the engine is under more of a load up hill, check to make sure the fuel pump pressure is within the manufacturer's specs. Also, check to make sure the catalytic converter isn't plugging up. That will cause a loss of power.
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Monday, July 8th, 2013 AT 9:17 PM

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