Question about 2003 Lincoln Navigator

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My 2003 lincoln navigator is is leaking coolant from the back of the truck behind the left rear tire through somekind of drain hole

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  • ximenez3 Sep 25, 2009

    would it be the heater or heater core and is does it have a rear heater core



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Same problem started on mine today

Posted on Jan 27, 2017

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  • Lincoln Master
  • 3,433 Answers

Spare bottle of antifreeze leaking? or windshild washer bottle leaking? Or rear heater, iff equiped leaking?

Posted on Sep 24, 2009


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2003 Lincoln Navigator leaking coolant from some sort of drain hole located behind the rear passanger wheel. There is 4 hoses then this hole, where the leak is.

Rear heater core or hoses going to or from it must be leaking? You have to take the cover off the rear heater assembly to fix it on most vehicles. don-ohio (:^)

Jan 27, 2017 | Lincoln Cars & Trucks

1 Answer

Condensation water from air conditioner soaking front and rear passenger carpets. Where is drain located?

98 grand cherokee limited 5.2L same problem found leak not from heater box but from drain mount on firewall under the glove box not behind it. drain line should be located behind right front tire in the frame. Turn your wheels hard left look inside fender well right side towards back side. hole in frame where drain line should come out.

Sep 10, 2012 | 1997 Jeep Grand Cherokee

1 Answer

Water leaking from undercarriage causing to run hot

The drain hole you are talking about is for the a/c. You need to put a pressure tester on the cooling system. You can get the tool from advanced auto parts tool program you will get all your money back when you return the tool. But watch the gauge if the pressure starts to go down start looking for the leak if it is coming out the same drain you are talking about that is your heater and you have to take out the dash to get to it to replace it. If the gauge is leaking but you don't see the coolant leaking anywhere check your oil see if is white. If so this means you have a blown head gasket. let me know what happens I have more info to give but this will get youj started

Mar 24, 2012 | 2002 Dodge Grand Caravan

1 Answer

2000 Lincoln Naviagator coolant leak somewhere by starter and there a tube there and how do i get to it..need help..Quick..Badly...haha

there is no tube. You probably have a leaky freeze plug. Take the starter off to get at it. If you see it, drain the coolant, pry it out, and take it to the store to get the right size replacement. Also get some sealer while you're there. Clean out the edge of the hole so the new plug will seal. coat the hole well with sealer and use a large socket in the plug anlong with a hammer to drive it in. It should go in flush with the block, like the rest of them. Refill the engine with coolant, start the car and keep the system full while checking for leaks.
If the problem is not a freeze plug, please get back to me.


Mar 15, 2011 | 2000 Lincoln Navigator

1 Answer

Coolant/water leaks at overflow near spare tire

it is the hoses that run antifreeze back for your rear heater it is an easy fix

May 02, 2010 | 1999 Lincoln Navigator

1 Answer

2003 navigator green color coolant leak

when you park the vehicle for the night slide a sheet of cardboard underneath. next day open the hood and sight down from a vertical position with the spot and inspect all components on that line of sight. it's not hot so it is alright to use your hands also.

Apr 27, 2010 | 2003 Lincoln Navigator

1 Answer

2004 navigator left side is down left front sensor not moving would that cause left rear not to raise up. RIGHT SIDE OK

yes, why is sensor not moving , did it unhook ,if so hook it back up, also the air back might have a hole, start engine and listen for an air leak at left rear, if hissing noise is heard then spary bag to see if leak is on bag if so replace suspention bag hope this helps good luck,

Oct 17, 2009 | 2004 Lincoln Navigator

3 Answers

Where is termostat in hyundai elantra

It is not likely the thermostat, because the thermostat is showing that it is overheating,so it is working, you must have a coolant leak somewhere. You will have to find coolant leak. Car is overheating because it is low on coolant

Sep 21, 2009 | Hyundai Motor 2003 Elantra

2 Answers

Leaking sunroof with 2 inches of water in car

I had the same problem... fairly simple fix. Just park the truck so the front end is lower than the back. Open then sun roof and you will see in each corner on the front of the sun roof that there is a little hole..this is the drain hole. Pour some water down the hole and see if either one is backed up. (If so keep reading for the solution) If not, park so the back of the truck is lower than the front. The channel that leads to the front drain also leads back behind the rear doors to the rear drain for the sun roof. Pour water in the channel and see if it drains. It will drain right in front of the rear tire, just behind the running board. If you dont get any drainage, you found the clogged drain. To clean the front draines, simply blow it out with an air compressor. For the back ones, you should check underneath the vehicle right in front of the rear tire and see if you can find the drain. If there is debris or dirt there, it could be clogging it. Clean it up and try again to see if you can get some drainage. If it isn't draining and the bottom of the drain is clean, it looks like you are going to have to tear down the head liner and try the same steps as cleaning the front draines. Good luck, and I hope this helps!

May 20, 2009 | 2003 Ford Expedition

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