WHAT IS CAUSING MY HEATING ISSUES? WHAT CAN I DO TO FIX OR FIND THE PROBLEM? PLEASE HELP, THANK YOU , COLD IN ALASKA
1998 Mercury Sable • 120,000 miles
The car puts out moderate but not hot heat only when you are driving, the faster you drive the hotter the heat but no heat when idling or going slower (35mph). does not over heat. have flushed radiator and heater core and replaced thermostat
March 4, 2012.
March 4, 2012.
You might want to see if you can get a higher temperature thermostat for the car. The stock thermostat starts to open at 193-200 Degrees Farenheight and is fully open at 224 Degrees Farenheight. Thermostats will have the fully open temperature stated when they are sold. So, you might try to find a special cold temperature thermostat that is fully open at 230 Degrees Farenheight. Look around the internet and try to stick with a reutable comapany like STANT thermostats. One thing you will note that freight trucks do is to have a radiator blanket over the front that can be opened or closed more or less to adjust for temperature. This is generally not only for running on highway temperature, but they spend the night in their cabs sleeping with heat coming from the engine idleing and the regular heater system supplying heat. So they can make the radiator opening smaller to make it a little warmer for the haeter. The cooling fan does not come on at the same temperature as the thermostat, it comes on when the temperature gets a little hotter. So, covering the radiator can help keep it warmer at idle yet not overheat the motor at driving or hgihway speed. Again aerodynamics is not a concern so airflow will be different from your car. If space allows, you might try a piec of cardboard to cover some fo the radiator and let it idle to see if it warms it up some and then drive it to make sure it does not overheat. If you don't have a temperature gauge, this is somwhat risky, but the overheat light on the dash will come on and you must immediately pull over and turn the car off and be able to remove the cardboard. If you try this the car actually gets hotter when the is turned off. So, it is possible the raiator cap might release pressure and hot steam will come at at high pressure. So wait a few minutes before you open hood to remove cardboard.
You might also try just replacing the thermostat and if you have not changed the ani-freeze in the last 2 years change it as well. In most temperatures the ratio of water to anti freeze is 50/50. But, you will see on anti-freeze containers that the manufacturer suggests a ratio with much more anti-freeze than water. This protects the motor to colder temperatures. Anti-freeze does nto cool off a motor as well as water and having new fluid may help as anti-freeze becomes more like water over time in its anti-freeze and heat disipation qualities. The greater amount of anti-freeze will also help to warm it up some.
Another thing you can do which is probably the best option is to change the fam temperature switch. You can get higher temp switches or you can get adjustable relay fan switches all in one that will overide the whole system. They are available at most auto parts stores and are not hard to install. They have a sensor that can be pushed into the fins of the radiator, DO NOT DO THIS. Simply attached the sensor with calbe ties or other means near the upper raiator hose at the radiator. Pusing it into the fins can cause damage. You can just turn the turn on fan temperture the a lower setting to accomadate for not following the maufacturer direction. This is just my opinion not to shove the sensor in between the fins when the near sme can be acheived via aforementioned. The realy will have an adjustable rheostat that you can play with as far as when the fans come on. You could sit with the car at idle and turn the fans on just after heater gets how. They are genrally not a huge range of adjustment and are within most engine specifications as to not allow a motor to overheat. So, this may be the way to go.
I reccomend changing the anti-freeze first and maybe even use a higher than reccomended ratio of anti-freeze too heat up the system just a little which may be enough. A new thermostat can be replaced at this time since the coolant is out.
Sometimes car manufacturers use different temperature thermostats depending on where the car is going to be sold. So, you mgiht try asking a dealership in Canada what the thermostat temperature is. It could very well be hotter and since it is made by manufacturer designed for your car is always the best.
So, you don't necassarliy have an issue. If you did the temperature of the coolant would dropp rather drastically at idle being that it is so cold. If the car was purchased in more souithernly state the thermostat may very well be cooler. Finally changin the anti freeze and raito will help and is safe to do. Antifreeze is actually very good at lubricating and I had a car tht I ran in the state of Maryland with pure anti-freeze and no water and it never overheated. So, it is required for maintenance and has low risk factor.
I also had an Altima in Maryland tht would do the same thing your car is doing in temperatures above what your car sees. So I don't think you have an issue. You may have a slow to close thermostat that when replaced may help and the other items I mentioned. Use the cardboard over the radiator as a last resort as it is risky to an extent. You only need a few degrees to get the heater to feel warmer. Doing the maintenance cheacks and services may add up to what you need and are necassary anyway.
Good luck and I hope this information helps you to get a little warmer.
Mar 4, 2012.
Mar 4, 2012.
No heat on either heater hose, new thermostat, heater valve on hose new, flushed heater core good, new heater hoses, heater valve open, no carbon detected from radiator, no water in oil...
1 answer • 1997 Honda Accord • 137,000 miles
High I have a 1992 Cadillac Deville. I had a flush and water in the cooling system. The heat ran hot it was nice on cold days to have heat. I drained the flush out and put antifreeze in...
1 answer • 1992 Cadillac Deville • 136,000 miles
I have a 2008 Chevrolet Impala with approximately 150,000 miles and when the engine is shut off there is a loud clicking sound from under the left dash. It will persist for several ...
1 answer • 2008 Chevrolet Impala • 99,000 miles
Got water in floor board. I know its the heater core. Can you give me a diagram on how to replace the heater core and what all parts I need to remove and replace?
1 answer • 1996 Dodge Caravan