Question about 1999 Mercury Cougar

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1999 Mercury Cougar started overheating. There is no coolant loss; no water pump squeal etc. We replaced the thermostat with no effect on the overheating. It appears as if the electric radiator cooling fans are not operating.

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  • Charolo3 Jan 03, 2009

    I have a similar issue with my cougar, it has a bit over 160,000 Miles. I have replaced radiator, i just came back from a good Mechanic shop they found out 2 Coolant hoses were bad & are leaking coolant (over $200.00 for hoses including a new Thermostat) I don't know if this is you're case but you can start by checking for leaks as this Engine well my engine V6 has a bunch of
    coolant hoses. One of the hoses I need to replace is under the intake manifold & the leaks are not easy to spot unless you have it up on the air. I personally looked under my car for leaks I didn't find any just keep refilling the reservoir.


  • mrjoebiggs Jan 14, 2009

    i have the same problem will someone please help me?!

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My 1999 Cougar started running hot and I took it to my mechanic and he found that the water pump belt was broke. Replaced belt and all is well. Hope this help.

Posted on Feb 06, 2009

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HI,AS A START CHECK COOLING FAN/S WHEN HOT ARE COMING ON,IF NOT MAY BE JUST THE FUSE BLOWN,THANKS

Posted on Jan 02, 2009

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4 Answers

Vehicle heats up very fast and I get no heat out of the dashboard. The upper hose is hot but the lower hose is cold after running the engine overheats. When I started it, the belt was squealing. Aft


START WITH THE BASICS. CLEAN, FULL 50/50 MIX IN SYSTEM. CHANGE THERMOSTAT. LOOK FOR TRACES OF COOLANT LOSS FROM THE WEEP HOLE IN BOTTOM OF WATER PUMP (USUALLY UNDER PULLEY). WATER PUMP DRIVE BELT OR SERPENTINE BELT MAY NEED TO BE REPLACED. ALSO MAKE SURE RADIATOR CAP IS WORKING PROPERLY.CHECK FOR LEAKS ANT WHERE ELSE IN ENGINE AREA.

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1993 Mercury Tracer overheating after running 15 miles or so


possibly air trapped on engine side of thermostat-possibly. HOW TO BLEED: loosen coolant temp sensor. Start engine. As engine warms, slightly unscrew sensor to allow air to escape. Once a steady stream of coolant trickles out you're good. Let us know if this helps. Good luck.

May 11, 2014 | Mercury Tracer Cars & Trucks

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My car is over heating, but running the a/c helps. We have replaced the radiator. Just wondering what else to try?


Most likely a bad water pump. Running the heat or AC helps circulate the coolant through the system but only temporarily. Usually you will notice a loss of coolant on the ground if the waterpump is leaking but it's also possible a bad bearing in the water pump is causing the overheating problem without leaking.

Jul 29, 2011 | 1997 Mercury Cougar XR7

4 Answers

My cougar is overheating today sporadically, going from normal to high and back as I drove today. I don't see any signs of leakage or hissing in the engine compartment area, indicating a hose problem. ...


sounds like your coolant level dropped enough to empty the heater core and your engine was not getting coolant up to the cylinder head, check the coolant immediatly and fill then idle in the driveway till fully warm and you should notice the leak

Mar 06, 2011 | 2000 Mercury Cougar

1 Answer

My car is overheating for some reason. I got an oil change the other day, and as soon as i got it, it started to run hot. I have a 4.6L V8 with at least over 200K.


First look for signs of coolant leakage at the water pump, radiator hoses, thermostat, transmission coolant lines, and intake gasket. If you're leaking at the water pump replace it. If you have no coolant loss check to see if your coolant fan is coming on. If all is fine then you probably have a faulty thermostat. If it still overheats you may have a blocked radiator core.

Jul 13, 2009 | 1995 Mercury Cougar

1 Answer

My 1997 mercury cougar is running on the VERY high side of hot


check to see that the electric fans are turning on when they are supposed to, and make sure the coolant is full and that the rad cap is good. Bad radiator caps are one of the most common overheating causes

Jun 21, 2009 | 1999 Mercury Cougar

1 Answer

I changed Thermostat and car is still overheating.


Yes it very well could be,the fins on the back of pump that circulate the coolant could be damaged. The only way to know for sure without disassembly would be to have a flow meter hooked up to it to measure flow.
I assume you electronic cooling fan is working?

Feb 16, 2009 | 1999 Mercury Cougar

2 Answers

1999 mercury cougar only blows cold air, no heat.


It's very common in the Cougar, Hate to say it, but I think you know the answer. You need a new Heate Core, PS, Their a B#$%#.

Dec 12, 2008 | 1999 Mercury Cougar

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