Question about 1993 Cadillac DeVille

1 Answer

1993 Cadillac deville: Windsheild fogging,overheating, and a leak ihe passenger floorboard. I think it may be the heating core

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 54 Answers

Sound right to me. check your coolant level

Posted on Apr 13, 2009


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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
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:

2 Answers

Why is coolant leaking from underneath the center of my cadillac deville 1997? I've replaced everything that has to do with the coolant. There is no water nor fog on the passenger side floor

Well, if the coolant is leakimg from the HVAC drain, then you need a heater core, no matter what. You really have to jack it up and look, but I can give you a couple of pointers......

1. The water pump is leaking. That happens a lot. The coolant is leaking near the front of the car, near the center, but ever so slightly towards the drivers side. You need a special tool to replace it and I think gm has an updated cover and gasket.

2. The water pump housing is leaking. The gaskets that seal it to the block are made of plastic and deteriorate often. The coolant will be leaking at the center of the car, maybe up by the water pump, or back between the engine and transmission.

3. The heater hoses. I have only seen this 2 time, but the metal pipes corrode along the fire wall.

4. You could need a radiator. I have seen the side tanks leak a few times.....

Just A couple of places to look, but you have to get under and look....

Nov 07, 2014 | 1997 Cadillac DeVille

1 Answer

How do i know when my heater core need replacing

antifreeze smell inside the car.. greenish fluid under the passengers side of the car..inside windows fog up after the car starts up while warming..obvious leaks inside the car on the floorboards..etc..

Dec 08, 2013 | 2001 Cadillac Seville

1 Answer

How do I remove and replace heater core in a 1993 Cadillac Coupe DeVille

With great difficulty is the answer. First get yourself into the front floor space upside down, look with lamp at heater /water pipes leading to heater. if no leaks seen, take to repair shop.

Oct 21, 2012 | 1993 Cadillac DeVille

1 Answer

Heating coil leaking film on the windshield and causes it to fog and does not clear quickly

what you describe is a leaking heater core,which will leak fluid into the passenger side floorboard,the "sweet smell is antifreeze,if you have in the radiator at this time.if you have the defroster on,the windsheild will fog with a sticky substance,left over steam from the cooling system leaking into the cars interior. the only way to repair this issue is to have your heater core replaced. it's a job! under the dash,behind the glove box, and the external hoses to the heater core are under the hood at the passengers side,just under the windsheild,but what we call the firewall. you will see 2 black hoses protruding through the {firewall,or dash from outside) those hoses will need to be removed,as well, as along with 35 screws under the dash to replace the bad heater core. suggest you call around for prices.the heater core itself ranges in price from 35.00 to 65.00 but the labor is the bang! research local garages for prices,but you have until cold weather to replace it,only because the heater core supplys heat to the inside of your vehicle. good luck,and i really mean research now,because most garages are not dealing with such issues now,due to warm weather.thank you for choosing!

Apr 09, 2011 | 1996 Toyota Tacoma

1 Answer

I am loosing antifreeze collant about a cup a day. I am brown gook in my radiator and the reservor. I smell antifreeze and for a couple of days my windsheild would fog up. I have not seen any antifreeze...

Usually when you have these symptoms, the first thing you should look for is coolant in the passenger side floorboard. Just run your hands over the carpet and feel for dampness. if you have floor mats, ne sure to check under the floor mat. If it is damp you are most likely going to have a leaking heater core or heater core hose

Sep 10, 2010 | 2002 Pontiac Grand Prix

2 Answers

Windows are fogging. Cabin filer was replaced and

sounds like your heater core is bad check for moisture on floorboard, if found have core replaced ASAP an keep coolant level checked

Oct 03, 2009 | 2002 Cadillac Deville

4 Answers

Coolant is leaking into the passenger side of car interior 1997 DeVille happens when AC is turned on,it is not overheating it is not leaking from anywhere visible under the hood

i bet it is your heater coil located under the dash of the car. when it gets cold if its not fixed it will fog up your windows.

Aug 19, 2009 | 1997 Cadillac DeVille

1 Answer

No heat fog's up inside

Do you want to know if it is the heater core. If you perform a pressure test on the cooling system it will pin point the source. But I does sound like the core.

Jun 01, 2009 | 1991 Cadillac DeVille

1 Answer

Over heating

it is most likely your heater core possibly the hose connection but really its the heater core

Apr 20, 2009 | 1989 Oldsmobile Eighty Eight Royale

Not finding what you are looking for?
1993 Cadillac DeVille Logo

Related Topics:

88 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts


Level 3 Expert

76132 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides