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Is there hot water is radiators - Cars & Trucks

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Yes when you car engine is hot it help your car engine cool in that process it make water in radiator hot also some radiator fluid is sometimes applied .

Posted on May 11, 2014

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Nope. In most newer cars it's special mixed coolant that is used.

Posted on May 11, 2014

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Top half or Radiator is hot while the bottom half remains cold . Is this normal


This can be due to one of a few different things...First of all, water flows from the engine to the bottom of the radiator, using the water pump and gravity, and the water returns from the radiator back into the engine on the top side.

Thermostat isn't opening...this causes the water / antifreeze to remain in the engine, and not flow through to the radiator. If the water / antifreeze gets hot enough, it should activate the thermostat and water should flow into the radiator through the bottom radiator hose.

The bottom radiator hose is either worn out (there is a spring inside the length of the bottom hose. it is there to keep the hose from collapsing under the suction pressure during normal use) If the hose feels spongy, soft, or shows signs of cracking, replace it.

The radiator may be clogged, preventing the water from flowing freely through all of the 'fins' in the grill section of the radiator. Hot water usually isn't just in the top section during a clogged radiator situation...

Jan 09, 2015 | Cars & Trucks

1 Answer

The radiator cap isn't getting hot and needs water to replaced frequently


radiator hose may be closing together after running for a while causing water to overflow to tank and ground

Jul 22, 2014 | 2001 Dodge Caravan

1 Answer

Why does my coolant not get hot in radiator


Check that you have put the thermostat in the right way. The body part has to go towards the engine otherwise the hot water un the motor cannot get to the mechanism to open the valve and allow hot water to flow through the radiator

Feb 03, 2013 | Cars & Trucks

2 Answers

Drained radiator added prestone Radiator flush refilled and started overheating, drained radiator replaced thermostat and now I get no heat from heater,Radiator water is hot


disconnect the heat hoses going into fire wall , put hose into one with pressure and flush as it sounds like it could be bloked in the heater core,the other thing that could be the problem be the hot ,cold switch as it restricts the flow to makes the heater hoter or colder , it might need tlc or replacing as it is manaul not elec

May 08, 2012 | 1995 Toyota 4Runner

1 Answer

1990 toyota pickup is running hot and when i shut


Try with the small stuff first. Replace the thermostat. Before you do that, you should flush and refill your system with just water after the flush process. The bottle of solution that you put into your radiator to flush it and clean it has instructions, follow those. Then let the car cool down and drain the system and refill it with fresh water only. Run this water for a bit and then do it once more. Once cooled back down , replace thermostat and replace the 50/50 mix of antifreeze and water.
Check engine oil level as well, low oil will overheat engines quickly.
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!!

Aug 06, 2011 | 1990 Toyota Pickup

1 Answer

Yes it is normal just no hot air


1. When setting the temperature to MAX, blower level to FULL and outside air Vent CLOSED, no hot air comes out after 2-5 minutes?
If YES, when did you last flushed your radiator and is it full?
2. if more than 5 years ago, flush radiator system, instructions are usually in Owners manual. Use a bottle of Radiator cleaner, run egine hot for about 10-15 minutes, carefully open petcock in bottom of radiator to flush out radiator, WARNING, careful as flushed coolant would be boiling hot. As sson petcock is open and water start to flow out, carefully open radiator cap to enhance flushing flow. Use garden hose to fill radiator while flushing until water coming out from petcock is cold and clear.
Once clear, start engine, turn heter full and blower full blast and keep hose in radiator flowing full, leave petcock open until clear water flows out again. Once clear waters comes out, turn off engine,turn off garden hose and let water drain empty radiator. Once it stops flowing out, close petcock snug and put radiator cap on, pull off radiator coolant catch bottle, clean bottle for any debris and dirt. Drain any water, leave bottle empty and put it back onto its place.
3. Fill radiator with 1 gallon (4L) of concentrated coolant, top up radiator until full, fill catch bottle with concentrated coolant, start engine and keep it overflowing until no bubbles comes out and the radiator is fully hot. Once it is flowing good, close and connect everything. Drive with it and keep catch bottle filled as necessarry.
Good luck. Give as vote and good comment if this advise solve youor problem. Thank you.

Jan 05, 2011 | 2000 Chevrolet Suburban

1 Answer

Have a 1993 toyota paseo it keeps running hot change out radiator and house it does not have a tremostate could that be making it run hot


An explanation of the cooling system.
You start your car, it is cold at first. The thermostat is shut. Car warms up and raises the temperature of the coolant in the engine block. Thermostat opens up. Water from the radiator (cool) is exchanged for water from the engine block (hot) The cool water causes the thermostat to shut. This traps the hot water in the radiator so that it can be cooled down. The cool water that was exchanged for the hot water, now becomes the hot water because it is in the engine block. It heats up until it's temperature causes the thermostat to open again, exchanging cool water for hot water. If you have no thermostat, then you will never hold water inside your radiator. You have to hold it there to allow it to cool off, then it becomes useful to cool your engine. So, yes put a thermostat back in it, and please vote as to whether this was helpful or not.

Nov 23, 2010 | 1993 Toyota Paseo

1 Answer

How do you drain radiator?


Draining water from your radiator? Take a look at the
bottom portion of your radiator and find a screwed plug.
Just unscrew this, and drain the water. Take care that
you do not do this while the engine is still hot, water coming out is HOT.

Oct 17, 2009 | 2005 Nissan Quest

1 Answer

2004 Dodge 1500 4x4 with 4.7 V8 getting hot. Replaced therm, water pump and tested Radiator. Still gets hot very quick. The water is cycling thru block, but not coming back into overflow when getting hot....


Do you have anti freeze in it? did you replce the radiator cap? is the fan clutch good? is the AC condensor full of bugs and the radiator? are you low on transmisson fluid? or Motor oil? all these will cause it to get hot.

Jun 30, 2009 | 2004 Dodge Ram 1500

1 Answer

Running hot


Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Dec 01, 2008 | 2002 Nissan Altima

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