Quick Answer: Why Does A Duramax Have 2 Thermostats?

Can a car have two thermostats?

Your vehicle has two thermostats, a primary and a secondary.

The primary and secondary thermostats have different temperature profiles with respect to their opening temperature because they are located on different areas of the engine.

The secondary thermostat is located in the cylinder head under the water plenum..

Is 230 degrees to hot for an engine?

For most cars, the normal operating engine temperature is in a range of 195 to 220 degrees Fahrenheit, though most dashboard temperature gauges don’t show an exact temperature. Instead, there are typically markings for cold and hot on the edges of the gauge and a normal range in the middle.

What are signs of a bad thermostat?

Symptoms of a Bad or Failing ThermostatTemperature gauge reading very high and engine overheating. The first and potentially most alarming symptom will be the temperature gauge reading high into the red within the first 15 minutes of your vehicle engine running. … Temperature changing erratically. … Coolant leaks around the thermostat housing or under the vehicle.

What temperature should a marine diesel run at?

The maximum cooling water temperature you should see on your instruments will generally be at or below 195 degree F. The cooling system in a marine diesel engine is fitted with a high water temperature alarm which will alert you if you exceed the safe operating temperature.

Why do diesels cover their grill?

Yes the grill covers are installed due to low temperatures. The engines are designed to operate most efficiently at a certain temperature. … In cold weather there is way too much cooling capability; so much so that the engine won’t get to operating temperature. To prevent over cooling, part of radiator is blocked off.

Does a 2010 Dodge Journey have two thermostats?

Dodge Journey: Thermostat. The primary thermostat for the 2.0L diesel and 2.4L gas engines are located on the front of the water plenum in the thermostat housing/coolant inlet. … The 2.4L engine has a secondary thermostat. The secondary thermostat is located in the cylinder head under the water plenum.

How many thermostats does a 2010 Nissan Altima have?

two thermostatDoes the 2010 Nissan Altima have two thermostat system? the 2010 nissan altima has an available add-on feature for dual-zone automatic temperature control.

Why do diesels have two thermostats?

Their purpose is more for aerodynamics than engine cooling. The dual thermostat system was designed to accomplish the same temperature control under different load conditions. … It may be necessary to block the air side of the radiator to allow the liquid temperature to get high enough to evoke full coolant flow.

Do diesels have thermostats?

Most, if not all, large diesel engines found in trucks and farm equipment employ a dual thermostat system. … Most engines have a radiator bypass circuit that allows coolant movement in the engine when the thermostat is closed (engine cold) to hasten warm-up and to eliminate localized hot spots.

Can you run a diesel tractor without a thermostat?

Gas engines don’t need a thermostat either, they just won’t run optimally at cooler engine temperatures, just like a diesel won’t. The engine temp needs to get up around 190*-200* to run most efficiently. If your’s will do that without a thermostat, take it out.

What temp is too hot for a diesel engine?

You can run up to 220°F all day long without any problems. The fluid will last a long, long time at that temperature. You can run up to 250°F for up to a half hour at a time. Above 250°F you should find a safe place to stop and idle or fast idle in park or neutral to cool the trans.

How hot is too hot for diesel?

When diesel fuel is sprayed into the combustion chamber, it is ignited by intake air that has been compressed, causing it to heat, the air can reach more than 900 degrees F which is more than hot enough to start the fuel burning when it is atomized from the injector.

What causes diesel engine overheating?

Coolant Leaks are the primary cause of overheating in diesel engines and can be easily identified, as you will notice either a low coolant level or an excessive amount of bubbles in the coolant. This can be a result of engine components, such as the cylinder head, expanding due to excess heat.

Why do I have two thermostats?

Additionally, why do I have two thermostats? It is possible to install a single central air-conditioning unit, with two or more thermostats, that can cool the house equally. Each zone of the house can be turned down or closed off to save energy. The thermostat in each zone controls the temperature in the zone.

Does a Chrysler 200 have 2 thermostats?

Recommended Services There are two separate thermostats in your application, a primary and a secondary. The primary and secondary thermostats have different temperature profiles in terms of their opening temperature because they are located on different areas of the engine.

What does a thermostat do in a diesel engine?

Its job is to block the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine. Once the engine reaches its operating temperature (generally about 200 degrees F, 95 degrees C), the thermostat opens.

What is normal operating temperature for a diesel engine?

Some may run a bit hotter, to about 190 degrees Fahrenheit. New engines run hotter. 190 to 220 degrees Fahrenheit. Our Mercedes Sprinter Diesel engine is good until about 250 degrees, then they want you to shut it down – it normally runs around 205 to 220.

Is it OK to run an engine without a thermostat?

If you drive without a thermostat, your engine will never reach its optimal operating temperature and your heater may blow cold air. … Keep a close eye on your gas gauge when driving without a thermostat, so you do not run out of gas. Your engine will use more fuel than normal.

Will an engine overheat without a thermostat?

A car without a thermostat would never even warm to operating temperature, much less overheat. The lack of a thermostat would create a constant flow of coolant through the engine, thus a constant cooling effect on the engine. … In this case though, the thermostat is not present, so this would not be a problem.

Can I drive without a thermostat?

Generally it should be ok to drive without the thermostat fitted, as it will only cause the engine to take longer to reach operating temperature. The thermostat is designed to allow the engine to reach ideal operating temperature as quickly as possible, so it would not be recommended to drive without it.