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Why does my 2000 Mercury Grand Marquis LS make a whistle noise when started when cold noise goes away when warm noise comes from front of engine

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  • Mercury Master
  • 13,066 Answers

Engine vacuum leak . Videos on youtube showing how to find a vacuum leak . The intake manifold gaskets would be a likely possibility .

Posted on Dec 19, 2016

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 5 Answers

SOURCE: 1994 Mercury Grand Marquis Check Engine Light Code 332

its the tube going from the egr valve to your exhaust it have carbon build up and you either have to replace it or get a metal coat hanger and clean it out.

Posted on Sep 26, 2009

ginko
  • 19396 Answers

SOURCE: 2003 mercury grand marquis LS

The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.

You will need to test and replace the blend door actuator.

To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.

The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.

Regards.


Posted on Nov 18, 2009

  • 8 Answers

SOURCE: ticking when cold

It could also be the infamous "Piston Slap" common in 1999-2002's.
GM "standardized" pistons or something like that and they did not fit the cylinders tight enough. The pistons "slap" the cylinder walls and make a tapping sound for the first few minutes until the pistons expand to fit. GM would not fix it and says it does not hurt the longevity of the motor ( yeah ri--ght! ) Do a google search for piston slap.
Oil level would help if it is a lifter ticking but will do nothing if it is the pistons slapping the walls. My 02 silverado has been doing this since almost new and the above description is straight from GM and a few visits to the dealership while under warranty.

Posted on Jul 05, 2010

  • 5581 Answers

SOURCE: How to reset Check Engine

You can remove the NEG battery terminal for 10 minutes and it will clear. Or go to Autozone or Oreillys for a free scan, find out why it came on, then have them clear it with their scanner.

Posted on Dec 02, 2010

  • 335 Answers

SOURCE: 1998 mercury grand marquis heater

Either your heater control valve is not properly operating or your heater core is clogged. Locate the heater control valve under the hood, should be close to firewall on heater hose, have someone adjust temperature from hot to cold and see if you can see the heater control valve operating if so replace the heater core, if its not doing anything replace it(heater control valve).

Posted on Feb 19, 2011

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That's most likely the issue. The speed cable is attached in the rear of the transmission. If it gets too cold then it makes noise. Often times the problem goes away after warming up. If it doesn't and the problem persists then you may want to replace the cable.

Dec 18, 2013 | Cars & Trucks

1 Answer

I have got a mercury grand marquis 2003 LS ultimate and having a knocking noise for few seconds when accelerating sometimes specially when the engine is hot and that will reduce the power. any ideas?


When you say the engine is hot are you talking about the normal operating temperature? Has the Check Engine or Service Engine light come? If so, was the On Board Diagnostics system checked for a codes? Usually a knocking sound during acceleration indicates a improper fuel mixture or low octane.

Jan 19, 2013 | 2003 Mercury Grand Marquis

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Can a air idle conrol valve whistle when cold


You are so right the IAC can make that whistling sound,

Nov 05, 2012 | 2004 Mercury Grand Marquis

2 Answers

98 Merc grand marques on cold start engine makes loud hammer tapp


Do you have the defrost on when it is doing this? Turn it off and see if it goes away. I'm still thinking A/C compressor.

Mar 30, 2010 | 1998 Mercury Grand Marquis

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sounds like your catalatic convertor,lifters?

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My 2000 Jeep Cherokee Sport makes a loud whistling noise (like a balloon when you let air out while pinching the opening) when I drive in cool or cold weather. It doesn't happen when it's warm out. If I...


It could be tons of different things , but being that the problem is more evident during cold weather , I'm inclined to think that the serpentine belt is loose.

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2003 Mercury Grand marquis utlimate edition Whistling noise coming from the rear and eerie annoying.


What speed?
In the trunk area?
Around the rear doors?
Only in crosswinds? Sometimes the antenna makes a whistle noise in cross winds at 50 plus mph.

Get a roll f 2 inch masking tape, and tape off areas one at a time and test drive.

May 12, 2009 | 2003 Mercury Grand Marquis

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