1990 Mercury Grand Marquis Logo
Melissa Will Crushu Kreuzpaintner Posted on Apr 01, 2013
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When i turn the key to start it up, it makes a loud squeal like sound, what is that?

The last 4 days, a few times when i go to turn the key to start it up, it makes an incredibly loud squeal like sound. then i quickly turn it off, it then starts fine. what could this be?

1 Answer

Nappier Fabrication

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  • Expert 108 Answers
  • Posted on Nov 02, 2014
Nappier Fabrication
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Starter may be going bad sounds kinda like a loud metal on metal grinding noise.

3 Related Answers

Anonymous

  • 702 Answers
  • Posted on Jul 02, 2008

SOURCE: 2001 Mercury Mountaineer won't start

Have a load test done on the battery. If it checks out good, take a voltmeter to the battery and have an assistant rotate the engine. If you see more than a 2 volt drop when the car is being started, the starter is heading south.

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Boundless Company Limited

  • 2122 Answers
  • Posted on Sep 08, 2008

SOURCE: Intermittent starting problem.

Hi dmaier

Seems from what you're explaining, that you have a starter motor problem....The problem is most likely caused, by a defective starter motor solenoid. The throw in coil could be damaged and cause those symptoms....If it is failing to throw, the starter is just spinning, without the bendix being thrown forward onto the ring gear....It could also be a worn ring gear (that will be a big job and means, removing the gearbox), but more likely the first....unless you're talking about a very high mileage vehicle.....

Regards Johngee10

Anonymous

  • 6468 Answers
  • Posted on May 24, 2012

SOURCE: 2001 grand marquis starting

have you tried to jump start it?but starters do fail more when hot

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As I look at your letter, which is very good, I might add, here are the few things that occurred to me.
The "loud squealing" should be a belt.
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If you are really careful, a "mechanic's stethoscope" might help you.
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The noise is most likely the serpentine belt. Check it's condition and that of the belt tensioner. It sounds like the belt is slipping, causing the squealing noise u describe. As the belt warms up, it's getting a better 'grip' and the noise stops. Turning on the heat also turns on the a/c in newer cars, this added drag on the belt (one more component to turn, the a/c compressor) would explain why it happens when u turn on the heat. Is the belt original? If yes, it's time to change it, and check the belt tensioner to make sure it's doing it's job of keeping the belt snug on all the pulleys. Let me know how u make out.
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