Question about 1993 Mercury Cougar

2 Answers

Engine Temp pegs, then drops

The engine temperature spikes to red zone. No heat out of heater. Once the temperature starts to drop the heater works. The thermostat was replaced and it seemed to help for a while (6 months or so, but during that time vehicle was driven less than 10 miles at any time). Now that i need to drive it to work 32 miles each way it is overheating again with the same symptoms.

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 137 Answers

Your fan switch and water pump needs attention a.s.a.p.

Posted on Jul 13, 2009

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 431 Answers

Hi I am vortash if the vehicle is overheating but no heat in the heater system it means no water in radiator ?. ie none in the heater matrix either you have a serious problem if the water is finding it's way into your oil and emeulsifying .. turning the oil creamy white means the head gaskest has gone and need replacing driving the vehicle in this condition will cause more damage to the head and result in at least a $2,000 bill for repair .. as the head will need to be skimmed pressure tested and posibly replaced doubling that initial $2,000 repair cost ..
get it checked out now and save yourself a bundle before it's too late .. regards Vortash

Posted on Jul 13, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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.
New users get to try the service completely Free afterwhich it costs $6 per call 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.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

1998 BMW 528 recently replaced radiator, water pump & pulley temp gauge sat middle all good THEN 2 months after all this temp gauge goes past middle then dropped back to middle . Next day temp gauge...


It could be the thermostat but you need to check the fluid level and for any leaks (these could even be pin hole) first. If you have one of those infra-red temperature gauges you can check the temperature of the cooling system in the engine bay to double check. Generally the engine temperature should not go much about 90 deg C - this is when the electric cooling fans kick in - are these turning on?

Feb 05, 2013 | Cars & Trucks

1 Answer

How do i put water in my radiator?


you need to replace thermostat and radiator cap.look under hood around engine compartment.look for a radiator cap near radiator,add 50/50 antifreeze and water to coolant system to bring up boiling point.pure water will cause engine run hotter because water evaporate away,remove radiator pour coolant in the radiator until coolant stop dropping in the radiator now some vechicle pour coolant in the coolant overflow jug,pour coolant until coolant level stop dropping and the coolant level stay at cold full mark.start engie let idle few minutes, watch coolant level in radiator if coolant start dropping add more coolant, when coolant level stop dropping put radiator cap back on let engine idle until both top radaitor hose and bottom coolant hose get warm turn off engine wait until it get cool then take a large rag slightly open radiator just a litle at a time to keep from getting scaled.once radiator remove add more coolant if low,put radiator cap back on start the engine let it idle watch the temp gauge if temperature gauge going hot zone stop engine wait until cool then add more coolant,keep doing this until engine stop overheating going into hot zone and coolant level stop dropping,make the coolant overflow jug coolant level stay at full cold mark, dont let jug run empty if so air will get in the coolant system causing engine to overheat.

Jul 22, 2012 | 2000 Plymouth Breeze

2 Answers

1991 legacy overheating, temp gauge creeps up close to red zone but not all the way, but not losing any fluid, and nothing is broken. Temp gauge drops to near normal when I run heater on high while...


If the temp is high at freeway speeds then the thermostat would be suspect. If the temp is high in slow traffic then suspect the cooling fans or its controls

Aug 17, 2011 | 1991 Subaru Legacy

1 Answer

How can you tell if the water pump is bad?


Hello jcs... Usually the water pump squeals loudly and there is water on the ground under the car. For the definitive test, get the car up to operating temperature, run the A/C. Once the temp is about 80-85 deg. Park it and let it sit idling with the A/C on for about 5 minutes, then turn the car off. Let the car sit for about 5 minutes with the engine off. Then turn the ignition so that the temp gauge registers. You will probably see it spike to over 100 because the car has been sitting with a hot engine and no coolant flowing through to take away the heat. Note the temp, then start the engine. If the temp doesn't come down to normal within about a minute, then you probably have a bad pump. When functioning properly, as soon as the car is cranked the pump will move enough coolant through the head to drop the temp very quickly.

Joe

Jun 28, 2011 | 1999 Chevrolet Lumina

1 Answer

I have a 2000 Mercury Cougar and the gauge inside tells me that the engine is over heating, no heat is coming from the heater when I turn it on, the fan for the engine is running at full blast, the engine...


Hi,

The overheating and lack of cabin heat both point to a failed engine thermostat which would be stuck closed. At the warm up stage, the coolant stays in the engine block to bring the engine to efficient operating temperature, then it opens and circulates the coolant through the radiator and heat core. If the thermostat is stuck closed, the engine will overheat, and coolant will never reach the heater core, and you will not get cabin heat.

Blinking oil light at idle which goes away during driving could be a low oil level, but may also be a drop in oil pressue. You could have a clogged oil fliter (at best) pickup tube, or a failing oil pump.

Mar 10, 2011 | 2000 Mercury Cougar

2 Answers

Was driving my 1999 chevy venture this morning after 12 miles had no heat & temp gauge pegged in the red. then went down & came right back up. Stopped & turned it off for 20 minutes or so. ...


You are describing a slow coolant leak and the resultant no heat and blockoverheating symptoms. The no heat is because there is insufficient coolant to cycle through the heater core, and the chuggin you describe is the engine indicating serious overheating.
With engine cold, you must add water--not anti-freeze--to the radiator itself, until it reaches the top of the radiator, then start the engine. If you do not have a radiator cap in addition to the overflow bottle (some vehicles don't), you must still add water to the radiator, even if you have to bypass the overflow bottle hose to do it. Add water until no more will go into the radiator. Start engine, let idle until operating temperature is reached. Thermostat should open and a good bit of the water will "sink" into the depth of the radiator. If you have no radiator cap, observe the temperature guage. When it reaches normal operating temp, when the thermostat opens, the temp will drop briefly at first, and you will notice warm air from the heater/defroster.
Once engine is warm and known to be full of water, seal radiator cap and/or system, and let idle for 30 minutes. Use this time to locate the "mystery leak." They can be very hard to find, and some won't leak until after the engine is turned off. During this idle period, observe the vehicle exhaust from the tailpipe as well as looking for actual water leaks: sometimes a bad head gasket can be diagnosed this way; if the exhaust is white and thick like steam, and smells like anit-freeze, you have a more serious problem. It is possible that after the repeated overheating cycles you have endured you may now have both a "mystery leak" and a blown head gasket.
Once leak is located, your next step is to let engine cool completely, drain the water, fix the leak, and then and only then add new antifreeze of the proper rating and ratio recommended by Chevy for your vehicle.
Anytime you drain a cooling system and refill it, it is necessary to check the overflow bottle at least 3 times in the first week after repair to ensure that you have the proper coolant level, and have not either missed another leak or not correctly repaired one. You MUST check it before you drive the vehicle the second time after the first repair attempt because it is normal to need to add more coolant than you added initially after the repair because of air trapped in the cooling system that will only be expelled after the first start/stop heating cycle. If after 1 week of daily normal driving you have only added a little more coolant once, and there are no more problems, you can be very comfortable that you have fixed your car.

Jan 16, 2011 | 1999 Chevrolet Venture

1 Answer

I’ve have problems with getting sufficient heat from my 2002 Jeep Liberty - Took the 2002 Jeep to dealership - First they wanted to replace the thermostat [$200], I explained it was replaced in November...


Here's the way I usually approach problems such as this. First I'll hook up a scan tool that allows me to see the actual engine coolant temperature is [not just what the gauge says] as the vehicle is being driven down the road at highway speeds. The coolant should be near the 192 - 200 degree range to get the best heat out of the heater. If the coolant temp is below that level then the amount of heat you'll get will drop according. IF the coolant is reaching full temp but the air coming from the heater isn't very warm then you could have a restricted heater core or a temp control door in the ductwork that isn't working properly and is allowing cold air to sneak past the heater core. Usually if you have a water pump impeller problem you'll also have an overheating problem as the pump often isn't able to move enough water through the radiator to keep the engine cool. Hope this gives you a starting point and good luck!

Dec 22, 2010 | 2002 Jeep Liberty

2 Answers

Thermostat?


It actually sounds to me like you're low on coolant. My Jeep leaks coolant and whenever it gets low the temp gauge will go real high and then drop, and the heater doesn't work well. This is because the cooling system of your car is supposed to be a closed system, full of coolant and no air. When coolant leaks out, the space it used to occupy is now occupied by air, which does not transfer heat well. When 'air' is passing through your cooling system, no heat can be transferred from your engine to the heater and radiator, resulting in a hot engine and no heat at the heater. Then when a pocket of water passes through the system, the temperature gauge quickly falls as the water absorbs the heat from the engine. The hot water that cools the engine is where the heater gets it's heat from as well, so when water passes through the heater core, the heater works, but when it's filled with air, it doesn't.

Hot water runs through the heater core regardless of whether or not your thermostat is open or closed. That's why your heater works in the winter even before the engine is at normal operating temperature. The fact that the heater stops working is a good sign that the thermostat is probably not the culprit.

As for the water pump. If the water pump was bad, your temp gauge would go into the red and stay there. Water pumps generally don't work intermittently. Either it's good and ot works, or it's bad and it doesn't.

However, if you are in fact low on water, as I suspect, it means you probably have a leak somewhere. The leak could be in the water pump housing gasket, so depending on where you take it for repairs, they may try to sell you a new water pump anyhow. So just beware of that.

Feb 12, 2009 | 2004 Chevrolet Blazer

Not finding what you are looking for?
1993 Mercury Cougar Logo

113 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

fordexpert

Level 3 Expert

5530 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides

Loading...