Question about 2003 Mercury Mountaineer

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Loud whinning noise

There is a noticeably loud whinning when accelerating starting from about 30mph through 70-80mph. The coise stops when you let off the accelerator. It is hard to tell but sounds like it is comming from the rear axle.

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  • Mercury Master
  • 14,036 Answers

Sound like transmission oil pump noise if you hear noise when vechicle accelerating moving.

Posted on Jul 29, 2013

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Posted on Jan 02, 2017

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  • 321 Answers

SOURCE: 1999 Mercury Grand Marquis

Check the U joints.Check the gear oil in the rear axle.Check the exhaust,make sure not rattling or rubbing anything.

Posted on Jul 08, 2008

  • 318 Answers

SOURCE: hey

Clogged exhaust.

Posted on Oct 27, 2009

  • 189 Answers

SOURCE: I own a 1998 Murcury Mystique Spree; every time I

mabey the alternater belt needs tightened

Posted on Apr 15, 2010

  • 238 Answers

SOURCE: 2002 merc cougar 2.5 liter has loud whistling

Sounds like a vacuume leak, use some carb cleaner in a spray can and gently spray the engine. When you find the leak the engine will stumble, check in that area for the leak.

Posted on Apr 26, 2010

  • 1 Answer

SOURCE: moaning noise coming from rear axle at 65mph+ very

Sounds to me like the differential. Check and add fluid, the driveline t's off at the rear axle, and there is a nut that your socket wrench should fit into (without a socket). Stick your finger in there and the fluid level should be to hole level.

Posted on Jul 29, 2010

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