Question about 2003 Mercury Mountaineer

1 Answer

2004 Mercury Mountaineer-Horrible smell coming from AC/Heat system....does not smell like coolant.......I have had chipmunks in the engine compartment. Is there an outside air inlet with a dead chipmunk?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Mercury Master
  • 5,537 Answers

This is not good. Your problem is worse than the Squirrels that put Walnuts in my A/C ducts and shorted my controls. The critters can chew holes in the plastic vent covers to gain access.

Your critters could have pooped and peeed in your Ductwork. This may be covered by your Comprehensive Insurance as it is a Health Hazard. Call your Agent, really, call your Agent.

I believe your Series of vehicle has an In-cabin Airfilter. This may help. Ford does carry products to Sterilize the A/C ducts which will help. Although the products were intended for Mold and things growing in the Ducts.

A dead Chipmunk is a possibility. So is a cooked animal on the motor. Good luck on this, about all you can do is change the Incabin filter and decontaminate. A Dealer can take apart the ductwork and get to th heart of the matter.

Posted on Oct 06, 2010

  • mattjosh2 Oct 06, 2010

    Where exactly is the entry for said chipmunk.......I would like to take a look from outside in...before ripping out the dashboard to get at the vent/fan
    Thanks so much

  • fordexpert Oct 07, 2010

    I would look at the screened plastic covers on what would be called the cowling. This would be the area between the bottom of the windshield and under the back of the hood. The wiper blades park close to them. There is a cavity there.

    Also look at any factory hole under the hood, on my truck the holes were adjacent to the hood latch U bolt. I had birds. With my hood closed, they flew under hood, built a nest, hatched eggs, and the young bald birds were chirping because it was getting hot from the engine running. I was thinking it was the leaf springs squeeking and that the springs must have rusted terrible to cause that noise.

    Well, this time I put the truck in the garage and turned off the motor. The engine was off and the truck was not moving, but it still squeeked. I heard the noise from the front of the truck and opened the hood. Under the bottom of the hood where there are stamped X's and body contour there was a birds nest. The nest was sandwiched inside the hood.

    So check all openings, look for twigs and fur and plastic. They could be close to the catalytic converters on the frame rails. Basically you are looking for something similar to a rats nest that is close to a heat source.

    If you go to Servall, an A/C supply firm, there are several products made for house ductwork. Can't say how you would mount the stuff, but there are odor eliminating products.

    If the engine is cold and you have a cat, it might sniff out the location of the nest for you. Do not know any other way to locate it.



1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

All 7 Mercury Mountaineer heat will not get hot what to do

First make sure you do have coolant in the system. If coolant levels are within specs go on to next step.

Get a thermomitor, the type with the long metal probe. Run the engine and measure temps at top and bottom of radiator. If temps do not read specification go to next step.

Have your thermostat tested, replace if needed.

Dec 07, 2015 | Mercury Cars & Trucks

2 Answers

My 2004 Mercury Mountaineer V8 has warm air coming out, but not hot. I replaced the thermostate last night. It is blowing just not hot.

the air from the blower will be the same temperature as the coolant temperature. If you want it hotter you may have to get a thermostat that opens at a higher temperature or close the air circulation vent so that only cabin air is heated.and not fresh freezing cold air from outside.

Jan 15, 2015 | 2004 Mercury Mountaineer

1 Answer

Getting heat in the back of the car but not in the front.

I would take a closer look at the heater control valve located in line with heater core vacuum controlled to close coolant flow to heater core when a/c Is's located by the radiator on passengers has a black plastic lever on it, and the body it aluminum. The lever breaks internally, causing low coolant flow to heater core.remove and you will find white sludge build up. Replace and be on your way....

Mar 05, 2014 | 2004 Mercury Mountaineer

1 Answer

I have a Mercury Mountaineer 1997 and everytime I step on the gas pedal there is a sound and the coolant seems to disappear fast after being filled and there is a burning smell. I have been told to ch

If you are loosing coolant and there are no leaks, it is usually being burned in the engine because of a leaking head gasket or intake gasket.

Sep 15, 2012 | 1997 Mercury Mountaineer

2 Answers

Where is the thermostat on a 2004 mercury mountaineer

hi the best way to find this is to locate the top hose of the radiator, follow that to the engine/motor, where it ataches to the engine is the thermostat housing, under that will be the thermostat...hope that helps

Dec 02, 2010 | 2004 Mercury Mountaineer

1 Answer

2004 mercury mountaineer.heat problem When turning ac knob to heat clicking sound like door opening and closing repeatedly sounds and air blows cold instead of hot.

2004 mercury mountaineer.heat problem
When turning ac knob to heat clicking sound like door opening and closing repeatedly sounds and air blows cold instead of hot.

Sep 13, 2010 | 2004 Mercury Mountaineer

Not finding what you are looking for?
2003 Mercury Mountaineer Logo

299 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts


Level 3 Expert

76649 Answers


Level 3 Expert

5537 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Are you a Mercury Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides