Car running hot?

There are multiple possibilities for this problems.

The most common and basic possible components that could cause this problem are as follows :----

1)Issue with Radiator - 

Does it run hot at high speeds, low speeds or does not matter? If gets hot at high speeds then the radiator is clogged from the inside, if gets hot at slow speeds that means radiator is clogged from the outside. 

Dirt, paper or leaves may be trapped between the radiator and condensor. (the condensore is infromt of the radiator and is a little smaller.) If it does not matter it may be over 50% clogged.

2)Water pump .Inspect water pump.Is it cracked or leaking or clogged.If any of this is noticed,then car will run hot.

3)Radiator cap. If this is bad, the system will not build pressure and it will blow coolant out while you are diving.

4) Thermostat. The thermostat can be slammed shut. This is usually caused by dirt build up in the system.Get the thermostat cleaned and test.In some rare cases new thermostat comes out bad/faulty.

5) Possible head gasget leak.

6) Cooling fan :If the fan is not turning when the car is hot, theres the problem. it could be bad fan clutch if it is a mechanical fan, fan turns but not fast enough because fan clutch is bad. 

It could be a small leak in the cooling system and your losing the coolant. Check radiator hoses and heater hose for cracks,or holes, make sure radiator cap seals properly. Could be a blown head gasket causing loss of coolant.

Note: If your car is running hot the A/C will not work. Hopefully by solving your overheating problem the A/C will start working again.

I suggest and recommend you to check this help links mentioned below.

This will help you to know the different problems and solutions.So you can continue further troubleshooting:-----

Help links are provided for all problems like water pump,radiator,radiator cap,heater core,cooling fan,head gasket ,overheating etc etc

Water pump replacing procedure for all vehicles?

http://technoanswers.blogspot.com/2011/11/water-pump-replacing-procedure-for-all.html

All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html

How to route Water Pump Belt for 1992 Oldsmobile Cutlass Ciera?

http://carbeltrouting.blogspot.com/2011/12/how-to-route-water-pump-belt-for-1992.html

How to replace Water Pump on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-water-pump-on-acura-car.html

How to Remove Water Pump on Toyota Previa?

http://technoanswers.blogspot.com/2011/12/how-to-remove-water-pump-on-toyota.html

HOW TO REPLACE A WATER PUMP

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-water-pump.html

Where is Water Pump located on Toyota Corolla?

http://technoanswers.blogspot.com/2011/12/where-is-water-pump-located-on-toyota.html

How to replace Radiator on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-acura-car.html

How to replace Radiator on Audi and VW car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-audi-and-vw.html

               

How to Replace Engine cooling Fan on Audi A4?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-engine-cooling-fan-on.html

HOW TO REPLACE AN UPPER RADIATOR HOSE

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-upper-radiator-hose.html

HOW TO REPLACE A LOWER RADIATOR HOSE

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-lower-radiator-hose.html

How to replace Radiator on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-acura-car.html

How to flush cars radiator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-flush-cars-radiator.html

HOW TO PRESSURE TEST A RADIATOR AND CAP

http://schematicsdiagram.blogspot.com/2011/07/how-to-pressure-test-radiator-and-cap.html

HOW TO REPLACE A RADIATOR

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-radiator.html

HOW TO REPLACE A RADIATOR SUPPORT

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-radiator-support.html

Transmission fluid gets into radiator?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fluid-gets-into-radiator.html

The plastic housing which goes to the upper radiator hose is cracked and leaking?

http://schematicsdiagram.blogspot.com/2011/12/plastic-housing-which-goes-to-upper.html

Radiator leaking?

http://repairhelpcenter.blogspot.com/2011/12/radiator-leaking.html

How to replace Thermostat on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-thermostat-on-acura-car.html

Where is thermostat located on 2006 dodge magnum 3.5L?//

http://repairhelpcenter.blogspot.com/2011/10/where-is-thermostat-located-on-2006.html

Thermostat on AUDI 1.9 TDI?

http://repairhelpcenter.blogspot.com/2011/10/thermostat-on-audi-19-tdi.html

How to replace Radiator on Audi and VW car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-audi-and-vw.html

How to Replace a Thermostat.

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-thermostat.html

How to locate Thermostat on Any car model?

http://schematicsdiagram.blogspot.com/2011/12/how-to-locate-thermostat-on-any-car.html

Where is thermostat on Audi A6?

http://technoanswers.blogspot.com/2011/12/where-is-thermostat-on-audi-a6.html

How to replace thermostat on 1992 Buick century?

http://technoanswers.blogspot.com/2011/12/how-to-replace-thermostat-on-1992-buick.html

Replacing thermostat on 1999 Mercury Cougar?

http://technoanswers.blogspot.com/2011/12/replacing-thermostat-on-1999-mercury.html

Thermostat Replacement on Toyota Corolla?

http://technoanswers.blogspot.com/2011/12/thermostat-replacement-on-toyota.html

Car engine Overheats and transmission starts slipping?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

Car freeze overnight and started overheating while driving?

http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html

Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

Buick Century overheating?

http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html

Car runs hot in Traffic?

http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html

Car engine Overheats and transmission starts slipping?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html

How to replace heater core for All car models?

Click the link below:---

http://technoanswers.blogspot.com/2011/11/how-to-replace-heater-core-for-all-car.html

How to Flush Heater Core?

http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html

                 

How to Remove Heater Core on 2008 Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-remove-heater-core-on-2008-honda.html

Honda Heater Core Replacement?

http://howtobyme.blogspot.com/2011/12/honda-heater-core-replacement.html

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Should I replace both or only one head gasket?

http://schematicsdiagram.blogspot.com/2011/12/should-i-replace-both-or-only-one-head.html

car head gasket, replacing head gasket,head gasket location,auto head gasket leaks,faulty head gasket,Cylinder head gasket,engine gasket,Toyota head gasket,

Water in engine oil?

http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html

Leaking head gaskets?

http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html

How to replace head gasket on 1994 Honda Accord?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html

Can I just replace Head Gasket on 1991 Buick Century?

http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html

Location of Head Gasket on 1994 Grand Marquis?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

How to replace Exhaust Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

How to replace Intake Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

How to replace Cylinder Head On Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

Is it Easy to replace head gasket on 2004 Toyota Camry?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

Should I only replace head gaskets or complete head gasket assembly on Ford Taurus?

http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html

How to know what is faulty Cylinder head or Head gasket?

http://schematicsdiagram.blogspot.com/2011/12/how-to-know-what-is-faulty-cylinder.html

Temperature gauge keeps fluctuating up and down close to red?

This problem is noticed on many car models.In this case the problem is noticed on 1997 Mazda 626.
First of all,turn the engine off and see if you notice any coolant leak.If yes, then that is the cause of problem.The coolant level is getting low and causing the temp gauge to fluctuate low to high in red zone.


But if there is no coolant leak,then other possibility can be faulty thermostat.
That could be the thermostat, you may want to take it out and check it in hot water to see if it opens, however,

With any engine that has been run hot, over heats or has been run hot, the first thing to is check the integrity of the internal engine, (ie. Head gasket(s) and head(s) and block) . Then consider the radiator being restricted somewhat.

You can check for cool spots in the radiator’s core that would indicate a clog.
The first thing that you want to do is check the cooling system for any exhaust gases. There is a tester for that, that you can get from Autozone service center for about $20. It comes with instructions, but there is a blue fluid that is used in it, if the fluid turns yellow, that is exhaust gases.

Block tester available as:
OEM/Block Tester AUTO ZONE

Part Number:
27145

If there are any exhaust gases in the cooling system, that will cause more pressure than desired and will allow the engine to burn coolant and/or heat the coolant up too high. Most times not filling the crankcase with coolant either.

If there are, then there would be an internal engine problem, like a head gasket or head.

Of course, you will want to make sure that the system is full, the coolant is circulating, and the cooling fan(s) are working as well as the pressure cap holding pressure.

This details will help.

Thanks.

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See below latest solved car problems :--------

Engine cooling components working?

http://repairhelpcenter.blogspot.com/2011/11/engine-cooling-components-working.html

How does Vehicles Engine cooling system works?

http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html

Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

Buick Century overheating?

http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html

Car runs hot in Traffic?

http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html

Car engine Overheats and transmission starts slipping?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html

Replacing Heater Water Control Valve on Honda Vehicles?

http://howtobyme.blogspot.com/2011/12/replacing-heater-water-control-valve-on.html

How to flush cars radiator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-flush-cars-radiator.html

How to Charge the AC System on Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-charge-ac-system-on-honda.html

How to Discharge the AC System on Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-discharge-ac-system-on-honda.html

Removal of Recirculation Door?

http://howtobyme.blogspot.com/2011/12/removal-of-recirculation-door.html

How much anti freeze to fill?

http://howtobyme.blogspot.com/2012/01/how-much-anti-freeze-to-fill.html