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My car is Hyundai sonata 2004 v6 I have over heating I just flushed the radiator out, changed the thermostat, changed the cap,changed the temperature sensor,water pump is working ,no leaks and fans are working but it still over heats what could the problem be? My car is Hyundai sonata 2004 v6 I have over heating I just flushed the radiator out, changed the thermostat, changed the cap,changed the temperature sensor,water pump is working ,no leaks and fans are working but it still over heats what could the problem be?

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  • Hyundai Master
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Look at the front of the car threw the grill. You will be looking at the A/C condenser, but they can get clogged up. No air threw the condenser, means no air threw the radiator.

Posted on Apr 25, 2015

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  • Hyundai Master
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Try this procedure:

  • The thermostat can be stuck close. If you feel the upper hose very hot and the lower hose cooler than normal, it may be a stuck thermostat.

  • Make sure the radiator and the overflow bottle are filled to the proper levels.

  • Bleed air from the coolant system:This is best done by running the engine with the radiator cap off until you see when the air bubbles stop coming up.

  • Check the radiator fans: The easiest way is to turn on the cars air conditioner and turn up the A/C fans. Both radiator fans should come on when the A/C starts

  • Make a pressure test by using a pressure testing tool (available at most auto parts stores). Use the pressure shown on your radiator cap. Most cars are 16 PSI or less, so don't exceed that pressure. Replace the radiator cap if it doesn't hold the pressure.

Posted on Apr 25, 2015

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  • Contributor
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Boy you have done everything I'd suggest to try,the only thing I can think of when you installed the thermostat did the housing holding it craft maybe a hairline just big enough to cause pressure problems, only other thing else is maybe you have a clog in a hose or in the radiator sorry that's all I got,other then the thermostat they sold you was junk one thing I'd try returning it and get a new one you never said it it was used or new

Posted on Nov 21, 2014

Testimonial: "yes everything I buy it was new (thermostat , radiator , sensor , a hose ) everything"

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How to replace thermostat on 2005 hyundai sonata 4 cylinder


selectcategory1.gif Thermostat ABCDEFGHIJKLMNOPQRSTUVWXYZ Test/Replace

CAUTION
If the radiator is filled to the top with coolant and the engine is run without the radiator cap in place, the coolant will expand and spill over as the engine warms up.

  • Drain some coolant into a clean container until the coolant level is below the thermostat housing.
  • Remove the upper radiator hose connection from the thermostat housing.
  • Loosen the housing bolts and remove the housing.
  • Remove the gasket and scrape it carefully from the surface of the housing and the mounting surface on the engine. If the gasket remains on either of the surfaces, there will probably bea coolant leak after reassembly. Some engines use a rubber O-ring to seal a thermostat housing.
  • Compare the size of the thermostat to the old one. They are of different sizes, types, and temperature ratings.
  • The temperature rating is stamped on the sensing bulb on the bottom of the thermostat. The temperature bulb faces the block.
  • When replacing a thermostat, be sure that the thermostat fits into the groove in the block or outlet housing. If the thermostat is installed upside down, the engine will overheat.
  • Install the gasket.
  • Reinstall the thermostat housing. Refill the system and run the engine or pressure test to check for leaks.
  • When the engine has reached operating temperature make sure the thermostat opens.
  • You should be able to see coolant circulating within the radiator.
  • Another way of checking thermostat operation is to feel the top of the radiator hose or use a thermometer or multimeter with a temperature probe to confirm that the coolant is warming up.
  • If the engine is overheating, but the top hose is still cool to the touch, the thermostat is stuck closed and must be replaced.
NOTE When a paper gasket is used and the recess is in the thermostat housing, it is a good practice to position the thermostat into the recess and glue the gasket to hold it in place. If it falls out of its groove during installation, the outlet housing can be cracked or a coolant leak will result. Before tightening the water outlet housing, try to rock it back and forth to be sure it is flush. Housings are often cracked during this step.

Apr 30, 2012 | 2005 Hyundai Sonata

6 Answers

2004 hyundai sonata over heating no leaks


You've looked in all the right places so far, and presuming the water pump is operating correctly (fan belt adjusted) and there is sufficient oil to lubricate motor, I'd suggest checking your ignition timing. If the timing is too far advanced i.e.firing too much before top dead centre-BTDC, then a motor is inclined to over-heat. Another cause of over heating is a lean fuel mixture. Examine spark plug electrodes - they should be brown to light tan colour. Light grey to white indicates lean burn and subsequent over-heat.
Take care around a hot engine.

Feb 24, 2012 | Hyundai Motor 2004 Sonata

1 Answer

How to change my engine coolant in a 1992 ford ranger-v6 3.0 engine, with what kind of coolant and how much of it


Hello again Vicki, you can read my first post to you on type. Now for where and how. Put suitable container under radiator drain valve. Start to drain old antifreeze, you can also loosen radiator cap for faster drain, but make sure antifreeze doesn't start to spill all over your driveway or garage floor. When radiator and engine are mostly drained, I would recommend to change the thermostat. Follow the top radiator hose down to the engine. This is where you'll find the thermostat. Remove the attaching bolts and remove thermostat.If you wish to flush your engine,you can put water down the thermostat hole as well as the radiator cap hole, or you can do a fancy flush. Shut drain below, reinstall thermostat housing without thermostat, fill radiator with fancy flush cleaning solution and water replace radiator cap ,run for time stated on can of flush. Now you go back to where I began and start the draining again. Dispose off antifreeze correctly it is dangerous to animals if they ingest. Close drain,and fill engine with antifreeze thru thermostat housing, when almost to top install new thermostat and gasket. fill radiator almost to top, start engine, open inside heater and let engine warm to operating temperature. At this time the antifreeze level will drop, because thermostat will open, and you can fill some more .This should eliminate any possible air bubbles. Fill your coolant tank. I would like to know how you make out. GOOD LUCK.

Oct 11, 2011 | 1992 Ford Ranger

4 Answers

Over heating, replaced thermostat, still over heats, i have a 2004 dodge stratus, 2.4L DHOC


After changing the thermostat, did you fill it with 50/50 antifreeze to water?

Is the radiator cap (not actually on the radiator) in good shape and seating properly?

If the answer is yes to all of the this, than I would try picking up some heavy duty flush from the local parts store and flush the system really well.

Hope this helps.

Feb 05, 2011 | 2004 Dodge Stratus

1 Answer

How do i change the coolant/flush radiator in 2004 ford freestar


Open the petcock on the bottom of the radiator and allow the old coolant to drain.

Close the petcock.

To refill you will first fill the degas container to the cold fill range, leave the cap off the canister. Turn all of the heater controls to warm and turn fan to full. Idle the engine until the thermostat opens. Top off the coolant and put the cap back on. Idle at 3000 RPM for several seconds and then idle again for a minute or so. Check the level and then repeat this 4 times, or until heat is coming from the front and rear heat units.

If you want to flush the system you will have to remove the thermostat and hook up your flush system to the radiator hose at the thermostat housing. Follow the instructions on your flush system then put the thermostat back in. Follow the instructions above to refill.

Dec 12, 2009 | 2004 Ford Freestar

1 Answer

2006 hyundai sonata stopped fans


dear friend-i think you must first check the fans manually to see if they work,if they do then when you you reach working tempreture,feel the top and bottom radiator hoses they should be the same temp,if not the thermostat is at fault,if yes then ckeck the thermo-switch,

Sep 28, 2009 | 2006 Hyundai Accent

1 Answer

The water on my car keeps heating up alot and it goes into the engine coolant resevoir leaving the rediator dry


You need to replace the radiator pressure cap. I would also replace thermostat, drain and flush radiator to start. If it continues the water pump may be not pumping water. If the thermostat is stuck closed it wont allow water to cycle through the engine causing it to boil and the pressure cap is not holding the pressure allowing it to flow to the reservoir. So first change the thermostat and the radiator pressure cap.

Sep 17, 2009 | 1993 Toyota Camry V6

1 Answer

Where is the thermostat in a 2004 Hyundai Sonata


follow the top radiator hose. Right where it attaches to the engine, there should be 3 screws and the thermostat will be there.

Jun 18, 2009 | Hyundai Motor 2004 Sonata

2 Answers

91 toyota camry overheating problem


So far you did the right things in the right order. If you have a pressure cap (looks like a radiator cap to the rear side of the engine. Dealer $15) change the pressure cap also and then flush the radiator. A sure sign of blockage is when you open the radiator look around inside the top if you see brown or green kind of gunky stuff. Flush the radiator anyway.
If after the radiator is flushed and you still overheat, the next posibility is the head gasket. But don,t worry yet, follow these steps and observations. (this goes for 93 camry V6 also, I have one)

  1. change radiator cap and pressure cap where applicable
  2. Change the thermostat.
  3. Some cars may have a thermo switch which ramps up the fan(double fan designs). Change that if applicable.
  4. flush the radiator and engine block
  5. change waterpump AND headgasket.
The temperature guage can tell you what you need to know.
  1. If the guage starts to spike up after stopping, pausing in traffic or while in gear not moving but it is fine while driving along the highway, then you are having a blockage in the cooling system. FLUSH SYSTEM.
  2. if there is a bubbling sound in the engine when you turn it off, FLUSH SYSTEM
  3. If the car overheats at anytime, anywhere and it drinks coolant like a fish, then you my friend have a headgasket problem. Change waterpump and head together

May 03, 2009 | 1991 Toyota Camry

1 Answer

THERMOSTAT


Procedure as follows:
REMOVAL
1. Drain the coolant so its level is below the thermostat. 2. Remove the inlet fitting and gasket. 3. Remove the thermostat INSTALLATION 1. Check that the flange of the thermostat is correctly seated in the socket of the thermostat housing. 2. Install the inlet fitting. a3b1369.gif Tightening torque Engine coolant inlet fitting bolt : 10 ~ 15Nm (100 ~ 150kg.cm, 7 ~ 11lb.ft) 3. Refill the coolant. INSPECTION 1. Heat the thermostat as shown in the illustration. 2. Check that the valve operates properly. 3. Verify the temperature at which the valve begins to open. Valve opening temperature : 80-84°C(176-183.2°F) Full opening temperature : 95°C(203°F)0333a68.gif

May 28, 2008 | Hyundai Motor 2004 Sonata

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