Question about 1999 Mercury Cougar

1 Answer

1985 cadillac fleetwood V8 4.1 blows cold air out but no heat

Brand new radiator and thermostat, gaskets etc. had everything working fine and drove more than 800km but one hose was worn and coolant leak from worn hose caused coolant to leak out and engine overheat while driving home. I replaced the hose and coolant, engine runs ok and return line heats up and overflow is functioning ok but still blows cold air inside the car. What should I check next? Thermostat, heater core? Not sure what to do next.

Posted by on

  • Anonymous Mar 14, 2014

    NEW WATER PUMP THERMOSTAT

  • Anonymous Mar 14, 2014

    NEW WATERPUMP NEW THERMOSTAT

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 64 Answers

If you had heat before the problem than there is probably air still in the system . dont know your motor set-up , but it might have a bleed valve on the thermostat housing or a bypass line . if not , start the car and let it warm up ......in the mean time take the upper radiator hose off @ the radiator . When it heats up to normal temp , the coolant should flow out of the hose . that will tell you that the thermostat is opening , and it will also get the air out of the system @ the same time . As soon as it starts to flow , hook the hose back up and tighten . refill the cooling system back to the full line , than check for heat
GM is bad about getting air trapped in the system .

Posted on Dec 03, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My 1996 Cadillac fleetwood had a leacing radiator so I changed it and now it won't stop overheating any tips


Make sure that the thermostat is working properly. It is a good idea to change the thermostat when you change a radiator. How long does it take to overheat? You can leave the radiator cap off, start the car and wait for it to heat up and see if the fluid is pushed into the radiator. If not and the car overheats then you know that the thermostat is bad.

Sep 11, 2016 | 1996 Cadillac Fleetwood

1 Answer

I have a 1991 Cadillac deville, and when I'm idling, my heat blows hot,but when I start driving down the interstate, it blows cold. I just put a new thermostat in it.


Its possible you've installed the thermostat upside down. If this is not the case, then I think you've got an air bubble in your cooling system. It could work itself out or while the engine is cooled down, you can open the radiator cap and see if its at all low on coolant.

Feb 20, 2015 | Cadillac Cars & Trucks

2 Answers

Heat stops blowing with increased rpm.


I would say that the replacement radiator has blocked cores and is restricting the flow at rpms. Even with a new core the top hose will be hot and the bottom will be quite warm to the touch as there is never 100% transfer of heat during the length of the cores. When a radiator is left for a period of time Assuming it was out of the vehicle the cores block up when the mud in the radiator dries out It has always been good practice to remove the radiator and keep it full of water if you want to use it in the future. So the answer to this problem is a new (brand new) radiator.

Nov 11, 2013 | Cars & Trucks

1 Answer

My car over heating and blows cold air had new thermostat housing done but still dont work


Trapped air you have to bleed the air ,open cap when is cold and start car until water goes up to the top put back cap.try two times.

Apr 03, 2013 | Cars & Trucks

1 Answer

I have a 1995 ford contour SE 5 speed. it is running hot almost red lining.no fluids are leaking, no antifreeze smell inside, windows do not fog up when heat is on but heat is blowing cold air, fans are...


Could be a thermostat problem, or potentially a blown head gasket.


if you take the oil cap off and check under neath the cap (inside of cap) if there is sludge buildup i would get the gasket checked.


Also try check in the radiator, if it looks like there is gunk or **** in the radiator it may be just enough to block the thermostat sensor. Usually if its a thermostat problem the temperature dial doesnt move.


Firstly would check for head gasket, thermostat and note how fast it heats up, when does it overheat (on idle, driving on highway, driving round town, etc)

Oct 24, 2012 | 1995 Ford Contour

1 Answer

.heater fan blows but no heat. 1992 fleetwood. It


check the thermostat, it may be stuck closed. if it is stuck, the coolant circulation by passes the thermostat through the by pass hose. and does not go through engine. this is why it does not get warm.

Feb 05, 2011 | 1992 Cadillac Fleetwood

1 Answer

I have a 92 Acura Legend L V6 engine. My acura had been running hot until I put a brand new radiator on it, I drove the car for appro 40 miles one way and back, still didn't run hot. The car heater...


Thermostat improperly installed. (backwards) Or possibly you could have a blown head gasket and a bad thermostat at the same time. The head gasket could be letting exhaust gasses into the cooling system. A bad (stuck open) thermostat could "mask" this problem by allowing the coolant to circulate through the radiator when it is not supposed to. Thus, installing a new thermostat would trap the exhaust gasses in the cylinder head and cause the overheating.

Feb 05, 2011 | Acura Legend Cars & Trucks

1 Answer

The heater in a 1996 cadillac fleetwood does not blow hot air when engine is idling, it is just warm, when the weather is very cold, (below 25 degrees.) when it is not this cold it seems to work...


I am guessing you have not changed your thermostat from a summer one to a winter one. If this is the case you need to put a 195 degree thermostat in to replace the 165 degree summer one. Let me know. Thanks.

Jan 22, 2011 | 1996 Cadillac Fleetwood

2 Answers

Thermostat


You might have a head gasket blowed or a crack head. Look at your coolant holding tank idling if it is bubbling you got a head or head gasket leaking. If this is happening you should be losing coolant and white smoke out the exhaust. to find the cylinder that is burning coolant pull the spark plugs the one that looks new is the cylinder that is burning coolant Good Luck

Mar 16, 2009 | 2002 Chevrolet Blazer

Not finding what you are looking for?
1999 Mercury Cougar Logo

164 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

60960 Answers

Fordexpert

Level 3 Expert

5331 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

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

Answer questions

Manuals & User Guides

Loading...