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Water heater

The heating start before the flow of water start and therefore overheating and security cut off occur... Pls advise wich part is faulty and where can I get it ? Thanks ...

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Sounds like manual bypass stuck take out free up reinstall should be ok

Posted on May 08, 2014

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Posted on Jan 02, 2017

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Why did my 2011 DTS Cadillac overheat?


An overheated engine can be caused by anything that decreases the cooling system's ability to absorb, transport and dissipate heat; therefore engines can overheat for a variety of reasons. Let's take a look at some of the most common causes.
Cooling System Leaks
This is the primary cause of engine overheating. Possible leak points include hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs, automatic transmission oil cooler, cylinder heads and block. Perform a pressure test. A leak-free system should hold pressure for at least one minute.
Wrong Coolant Concentration
Be sure to use the coolant recommended by your vehicle's manufacturer. The wrong type of coolant and/or mixing the incorrect concentration of coolant and distilled water can also result in engine overheating. The best bet is to perform a complete flush and fill.
Bad Thermostat
A thermostat is a heat-sensitive valve that opens and closes in response to engine temperature. Heated engine coolant passes through to the radiator when the thermostat is in the open position. In the closed position, it prevents the flow of coolant to speed up the warming of a cold engine. When the thermostat gets stuck in the closed position, coolant stays in the engine and quickly becomes overheated, resulting in engine overheating.
Blocked Coolant Passageways
Rust, dirt and sediment can all block or greatly impede the flow of coolant through the cooling system. This can limit the system's ability to control engine temperature, which may result in higher operating temperatures and engine overheating. Once again, a flush and fill is recommended to remove debris.
Faulty Radiator
By passing through a series of tubes and fins, coolant temperature is reduced in the radiator. Leaks and clogging are some of the most common causes of radiator failure. Any disruption in the radiator's function can lead to elevated engine temperature and overheating.
Worn/Burst Hoses
A hose that contains visual cracks or holes, or has burst will result in leaks and disrupt the flow of engine coolant. This can result in overheating.
Bad Radiator Fan
A fan blows air across the radiator fins to assist in reducing the temperature of the coolant. A fan that wobbles, spins freely when the engine is off, or has broken shrouds will not be able to reduce the temperature to proper level, thus possibly resulting in engine overheating.
Loose or Broken Belt
A belt is often the driving link that turns the water pump at the correct speed for proper coolant flow through the cooling system. If a belt is loose or broken, it cannot maintain the proper speed, thus resulting in poor coolant flow and ultimately, engine overheating.
Faulty Water Pump
Known as the 'heart' of the cooling system, the water pump is responsible for pressurizing and propelling engine coolant through the cooling system. Any malfunction of the water pump, including eroded impeller vanes, seepage or wobble in the pump shaft, can prevent adequate coolant flow and result in engine overheating.

Oct 13, 2016 | 2011 Cadillac DTS

Tip

Overheating of car


HII,

NOTE: To avoid burns and injury, never, ever attempt to remove a radiator cap while the engine is hot!



An overheated engine can be caused by anything that decreases the cooling system's ability to absorb, transport and dissipate heat; therefore engines can overheat for a variety of reasons. Let's take a look at some of the most common causes.Cooling System LeaksThis is the primary cause of engine overheating. Possible leak points include hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs, automatic transmission oil cooler, cylinder heads and block. Perform a pressure test. A leak-free system should hold pressure for at least one minute.Wrong Coolant ConcentrationBe sure to use the coolant recommended by your vehicle's manufacturer. The wrong type of coolant and/or mixing the incorrect concentration of coolant and distilled water can also result in engine overheating. The best bet is to perform a complete flush and fill.Bad ThermostatA thermostat is a heat-sensitive valve that opens and closes in response to engine temperature. Heated engine coolant passes through to the radiator when the thermostat is in the open position. In the closed position, it prevents the flow of coolant to speed up the warming of a cold engine. When the thermostat gets stuck in the closed position, coolant stays in the engine and quickly becomes overheated, resulting in engine overheating.Blocked Coolant PassagewaysRust, dirt and sediment can all block or greatly impede the flow of coolant through the cooling system. This can limit the system's ability to control engine temperature, which may result in higher operating temperatures and engine overheating. Once again, a flush and fill is recommended to remove debris.Faulty RadiatorBy passing through a series of tubes and fins, coolant temperature is reduced in the radiator. Leaks and clogging are some of the most common causes of radiator failure. Any disruption in the radiator's function can lead to elevated engine temperature and overheating.Worn/Burst HosesA hose that contains visual cracks or holes, or has burst will result in leaks and disrupt the flow of engine coolant. This can result in overheating.Bad Radiator FanA fan blows air across the radiator fins to assist in reducing the temperature of the coolant. A fan that wobbles, spins freely when the engine is off, or has broken shrouds will not be able to reduce the temperature to proper level, thus possibly resulting in engine overheating.Loose or Broken BeltA belt is often the driving link that turns the water pump at the correct speed for proper coolant flow through the cooling system. If a belt is loose or broken, it cannot maintain the proper speed, thus resulting in poor coolant flow and ultimately, engine overheating.Faulty Water PumpKnown as the 'heart' of the cooling system, the water pump is responsible for pressurizing and propelling engine coolant through the cooling system. Any malfunction of the water pump, including eroded impeller vanes, seepage or wobble in the pump shaft, can prevent adequate coolant flow and result in engine overheating.ALSO IN THIS SECTION:HOW A COOLING SYSTEM WORKSSYSTEM MAINTENANCE & RED FLAGSCOMMON CAUSES OF OVERHEATING
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on Aug 24, 2015 | Air Conditioning and Heat for Chevrolet...

1 Answer

What happens if you over heat the hot water heat trap nipple on a new installation of a hot water tank? Could it cut the flow of hot water down to a trickle?


The heat traps are usually made of plastic and there are warnings on the unit not to overheat them. I've never overheated one, but if the plastic melted, it certainly could obstruct the flow of water.

Feb 14, 2011 | Camco Water Heater Heat Trap Nipples

2 Answers

My Pentair Mastertemp shakes and rattles, then cuts off after about 15-30 seconds of running. I called a pool co. and they told me to replace the water regulator valve, which I did. The same problem is...


When a heater starts rattling and shaking it has nothing to do with the water regulator. Some of the most common possibilities are as follows:

1. Very low water flow. If the skimmer or strainer basket on the pump or pool are clogged, or the filter is dirty, or the pump is old and not working properly, you can get just enough flow to activate the heater, but not have enough flow to do it safely. When there is too low of water flow, the water inside the heat exchanger evaporates into steam which creates pressure inside the exchanger which cannot be released, therefore making the heater "jump" or "shake" al over the place. This fix is easy if this is the case, fix the flow problem.

2. Hole in the heat exchanger. When heat exchangers start to fail, they get small holes in them letting air into the system. When this air gets super heated it expands and creates pressure just like the above situation (kinda). This will also create the shaking.

3. Completely clogged heat exchanger (inside the exchanger). If you fill off a well system, or have high metals and minerals in your water, these metals and minerals will attatch themselves to the inside of the heat exchanger thus clogging it and reducing the water flow through the heater to just about nothing. There are 3 cleanout plugs on the heat exchanger so that it can be regularly flushed. This should be done at least once a year.

4. Clogged heat exhcanger (outside the exchanger) This is the least likely, but if you are getting a bad burn on the heater due to not getting annual services, the heater will soot up, prohibiting the natural venting capabilities of the heater, and trapping ALL of the flames heat on the exchangers bottom. With nowhere to go , once again, the exchanger is super heater and pressure builds up enough to shake rattle the heater.

Sorry there are so many options for this, but all signs point to this heater needing a serious cleaning inside and out. It can be done by you, but should probably be done by a service tech.
If you have more questions, contact me @: adamh@newconceptchem.com

Jan 21, 2011 | Pentair 460730 MasterTemp Heater 200BTU ...

3 Answers

Took out the thermostat, replaced the radiator, the water is circulating in the radiator but it is still running hot. what do i do next?


Overheating can seriously damage a car's engine if left unchecked. Although overheating simply means that a car's engine temperature exceeds normal operating temperatures, the causes of overheating are varied. What follows is a brief list of some of the most common causes of engine overheating.

    Faulty Radiator
  1. A car that overheats will often have a faulty radiator. A radiator is responsible for cooling hot engine coolant that picks up heat from inside a car's running engine. A radiator "radiates" the heat from engine coolant out into the outside air. A faulty radiator loses its "radiating" effects and allows engine coolant to become overheated, thus rendering it ineffective at adequately cooling and engine.
  2. Faulty Water Pump
  3. A faulty or malfunctioning water pump prevents adequate engine coolant flow and can cause a car to overheat. A water pump serves to pressurize and propel engine coolant throughout a car's engine and radiator to increase the heat-reducing capabilities of engine coolant. A faulty water pump loses its ability to adequately pump and propel engine coolant, and can cause a car to overheat.
  4. Coolant System Leaks
  5. A leaky engine coolant system reduces the level of circulating engine coolant, which increases engine temperature and leads to engine overheating. Radiators, water pumps, and coolant system hoses and seals--all of these coolant system parts can develop leaks, which can result in low coolant levels and engine overheating.
  6. Faulty Thermostat
  7. A car thermostat regulates the flow of engine coolant. A thermostat is a heat-sensitive valve that opens when a car engine reaches a set operating temperature and closes when a car engine is cold and warming up. If a thermostat gets stuck in the closed position, coolant will be prevented from reaching the engine, which will quickly lead to engine overheating and potential engine damage.
  8. Low Engine Oil Level
  9. Engine oil, in addition to lubricating an engine's internal parts, helps to keep engine operating temperatures reduced by eliminating friction within the engine. If engine oil levels are low, friction and heat build up inside an engine, a condition that causes increased engine operating temperatures and can lead to engine overheating.

Jan 15, 2011 | 1998 Isuzu Rodeo

1 Answer

Hello... I got problem with my honda odyssey. For the past 3 days, if i start the engine, after 5 min the temperature will goes up to HOT and engine indicator light-up. I turn-off the engine and then start...


Your English is very good.

From what you have described, which is a rapid over heating of the radiator coolant fluid and therefore a hot engine condition, it would appear that the thermostat in the engine's cooling system is faulty.

If the thermostat is sticking in the closed or nearly closed position temporarily, there will be no flow or very little coolant flow between the engine and the radiator and the engine will overheat.

You have advised that after the engine is shut off , and radiator coolant fluid has cooled, you re-start the engine and drive the car without the overheating condition occurring again and the radiator coolant temperature is normal. This time there is no overheating because the thermostat is working normally.

You should have the thermostat replaced as soon as possible because allowing the engine to overheat can cause very expensive engine damage.

If you had a continuing overheating condition then I would suspect both the thermostat and the water pump. However as the overheating seems to be only temporary, and clears itself after you have shut down the engine and re-started it 10 minutes later (without further overheating arising) then I think you only have a faulty thermostat.

Please also check that the electric fans which draw air through the radiator are operating. These run on a temperature sensor and will switch on automatically once the radiator coolant fluid reaches a certain temperature and then switch off again when the fluid temperature reduces. You will hear them running once they start up. If these fans are not working the radiator coolant can quickly overheat in various driving and temperature conditions because there will be insufficient air flow through the radiator to cool the fluid. If the temperature sensor is faulty or has died, or if the electric motors running the fans are faulty, the fans will not operate.

I hope this helps.

Dec 18, 2010 | Honda Odyssey Cars & Trucks

1 Answer

My Atwood 6 gal. water heaters pressure relief valve starts dripping shortly after (8 or 10 min.) heat is called for, and dripping gets stronger until a full flow. I have checked all four hi-limits and...


If the water seems hotter than normal, then a faulty thermostat would be a good bet.
If water doesn't seem any hotter than normal, then check incoming water pressure.
usually 2 things cause that, too much pressure coming in, or thermostat faulty and not cutting out when normal temperature reached, thus higher temperature, and pressure. If both them check out, replace valve.

Oct 30, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

Not sure if my first try worked so will try again. Bosch PowerStar AE125 Tankless Water Heater. Quit heating water. Water pressure and flow is good. Thermal Cut-outs are good - (not tripped) (Power at...


The easiest thing to do would be to call Bosch and just ask for a new heater for free. The other option is to call Bosch and have them send you all new elements. If there is power, there should be heat of some kind.

Sep 13, 2010 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

Restricted air inlet


Clear the area around the bottom of waterheater so as to allow air flow around mesh area built into base of water heater and or open unvented door passages involving waterheater. This mostly a safty issue which seldom occurs if not remedy quickly.

Please rate. Thanks JJ505

Mar 29, 2009 | General Electric GE SmartWater Household...

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