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1998 Ford Contour; whirring sound when accelerating

Tiny
DSMDDN11
  • MEMBER
  • 1998 FORD CONTOUR
  • 193,000 MILES
Everytime I am about to get on the freeway or a street with a slightly high speed limit my car makes a whirring sound(almost like a turbine powering up). This only happens when accelerating towards a high speed, it happens on slow accelerations but very rarely. This has not caused any performance problems, but I would rather not risk any future problems. Could this be related to a crack in the exhaust manifold?
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Tuesday, August 23rd, 2011 AT 3:59 AM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
If it's only happening at higher speeds, then you would have all the splash guards under the car checked. They can start vibrating in the wind and cause a noise like that.
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Tuesday, August 23rd, 2011 AT 10:05 AM
Tiny
DSMDDN11
  • MEMBER
  • 38 POSTS
The sound is only made when accelerating to high speeds. Once the car reaches around 45mph+ during acceleration the sound stops or isn't as loud. Cruising at speeds around 20-45 mph will not make the sound. The thing is that since the performance of the car has not been affected at all, I don't know how serious this could be. I'm mainly worried that the car will make the sound when on the dyno at the smog check and not pass the inspection.
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Tuesday, August 23rd, 2011 AT 10:47 AM

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