Question about 1998 Mercury Grand Marquis

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My mercury marquius sometimes almost runs hot and has a leak but isnt the radiator i constanly put water n every other day cuz it wil leak out

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Sounds like a bad head gasket.

Posted on May 11, 2010

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3 Answers

Overheating car


maybe you have a blown head gasket your leaking head gasket when ur car is cold open your radiator cap see if the coolant in it try to tap up coolant until the neck of your radiator then start your engine and observe the radiator neck if the collant puks it out if your coolant is pukking out meaning you have a leak or blown head gasket and thats the cuz of your overheating

May 06, 2014 | 1994 Cadillac Eldorado

Tip

Car Over Heating!! Simple Temporary FIX to get you home.


We ,, well most of us have had our cars over heat at times, and sometimes in places that we wish id didnt happen. I will detail a few tricks here to get you on your way or back home safely.

Why do cars over heat?

Simply because it gets too hot!!, There are several reasons for this ,
1.) radiator has no water
2.) radiator is leaking
3.) Thermostat isnt working
4.) Fan isnt working

If your radiator has no water then u have to shut the car off. Use cool water and pour over the radiator cover until it gets cool to your touch (NEVER OPEN A HOT RADIATOR, PRESSURE BUILDS WITH THE HOT WATER AND IT WILL EXPLODE OUT AND BURN YOU). when its cold enough for you to touch, use a damp cloth to open the radiator cap, keeping your face clear of it, Start your engine, and add water to the radiator. (Dont Add Water To a hot engine without starting it)

If your radiator is leaking then allow it to cool a bit and follow the above instructions to get it opened. Crack an egg (whole egg without shell) in the radiator before adding water. (keep engine running) the egg solidifies in the hole and plugs it enough to get you home. If you plan to repair the radiator, u must flush it out first to get rid of the egg and other contents before welding.

The thermostat!!
If this isnt working propperly the fan wont turn on, follow the instructions for the fan below.

Fan aint working
Look closely at the fan you will find you will see a tube of 2 / 3 wires connecting to its motor. it connects there via a clip. unclip it. there will be 2 wires sometimes 3 . One of them is a positive (blue,brown,red) and the other is a ground (black or black stripe) cut them , use extra wires and connect them to the positive and negative of your battery terminals. The ground can also be placed on the body of the vehicle.Remember to disconnect these wires when you get home or it will drain your battery.

There you have it. A few simple to help get you home safely in the event your vehicle overheats.

on Feb 24, 2010 | Toyota Land Cruiser Cars & Trucks

1 Answer

I have 85 toyota have changed water pump reader cap thermostat and still gets hot boils out water but when you put cold water it's ok for the rest of day sets over night start next day gets hot ag


did you let excess air out of radiator? after filling let it run for a few minutes with out radiator cap and make sure the water does not go down and serculates after thermostat opens, refill if needed
do you notice moister under vehicle in the morning ? possibly a gasket could be leaking.

Mar 30, 2012 | Cars & Trucks

1 Answer

My car runs hot and leaks antifreeze. I have replaced the thermostat and water pump. It doesn't do it constantly, it can go all day with out doing it and sometimes it leaks like crazy.


The overheating of the car can be due to many reasons and you need to check on each one to confirm the working of the system.
1. In the first place the working of the engine must be assessed. it must be smooth with a good indication that the tuning timing and the power seems good. This will confirm that the settings of the engine is good and so there is less scope that the engine seems to heat up on its own.
2. Secondly the radiator pressure cap must be tight and good, the radiator MUST not loose coolant after a run or in a few days time- since this must be a sealed system and there is no scope of water overflow or loss unless there is a leak- sometimes the leak is too microscopic as under high pressure only steam might escape and so reduce the coolant. So check for leaks while the engine is hot , specially the radiator, the hose or the fittings.
3. The working of the water pump must be good to ensure a good flow and circulation, so check for leak in the water pump, check for presence of water in the exhaust or leaking on the engine gaskets.
4.Make sure that the coolant is good and clean if not drain and refill , if there is presence of rust please have a good flushing of the radiator or else the chances are that the radiator ports can be blocked and reduce the efficiency of the cooling .
5. Finally the cooling fan, the radiator fan must be working, check the thermostat/thermistor to work accordingly with good flow, have a good water jet wash on the radiator for a clean radiator cooling fin exposure.

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Sep 09, 2011 | 1995 Lexus ES 300

1 Answer

OVERHEATS AFTER DRIVING APPROXIMATELY 15 MILES, USES ABOUT A GALLON A DAY OF COOLANT, CAN'T FIND LEAKS, WATER PUMP GOOD, NO WATER IN OIL........


Are cooling fans working? if so when they do work, the air coming through the radiator should be HOT, ROASTING AIR, if not the radiator isnt flowing coolant.how does it run after sitting all night at first start, does it run rough 5-10 seconds? if so, may have head gasket issues. BIG BUCKS........

Oct 15, 2009 | 1999 Cadillac DeVille

4 Answers

1997 cadillac eldorado running hot


Make sure you put in the correct temp thermostat. GM usually has 2. A low temp and a high temp. Most shops will give ya the high temp just because thats usually what the book calls for. you might want to try a low temp. Also, sometimes, when a car runs hot and everything has been repaired....well, almost everything......it might be the head gaskets. And those my friend are no easy task. But..somewhere to start. have your cooling system pressure tested. Only way to really know for sure. Oh..also make sure your fan is working!!!! You might have a faulty fan switch.

Jun 19, 2009 | 1997 Cadillac Eldorado

1 Answer

Water pump


Fill the radiator completely with coolant mixture. Let the engine warm up 10 to 15 mins. Is the upper radiator hose warm? If yes, then the water pump and thermostat are good. If all this works, then the leak is somewhere else. Hope this helps.

Feb 08, 2009 | 2001 Mercury Sable

2 Answers

1993 mercury sable


if you are sure all of the above is correctly installed then the only othet thing i can think of if it isnt loosing coolant is either the guage or the sender unit is faulty,
if its not loosing coolant and the radiator isnt filled with muck then it really cant be anything else.
one other thing might sound silly but check that the thermo fan if its got one is coming on or if there is a plastic bag or something blocking the radiator

Jul 01, 2008 | 1993 Mercury Sable

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