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What causes the exhaust tempature and to get to hot

Customer Question
What causes the exhaust tempature and to get to hot
Submitted: 2 years ago.Category: Medium and Heavy Trucks
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Customer reply replied 2 years ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
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3/7/2016
Technician: Curtis B., Technician replied 2 years ago
Curtis B.
Curtis B., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 31,912
Experience: Technician turned service manager on multiple lines of trucks and engines, used in industry.
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Exhaust temperature rises as the load on the engine is increased. The extra fuel in the cylinders cause cylinder temperatures to rise, and the exhaust goes through the turbo charger, which raises it. All relate to higher water temperature . Cooling system , fan, thermostat, water pump, and radiator all work together to keep engine in a safe operating range. Radiator has to be clean, the fan belt tight, thermostat working properly , and water pump circulating the coolant.

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Technician: Curtis B., Technician replied 2 years ago

Over heat occurs when one of the functions has a problem.

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Technician: Curtis B., Technician replied 2 years ago

What problem are you seeing?

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Customer reply replied 2 years ago
The radiators are dirty but wouldn't that cause the engine temp to rise
Technician: Curtis B., Technician replied 2 years ago

What is rising? Just exhaust temperature? What temperature are you seeing? Turbo charged diesel under load can be 1200F

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Technician: Curtis B., Technician replied 2 years ago

Exhaust manifold can be red hot!

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Customer reply replied 2 years ago
Temps are between
1 engine 1269 1279
Engine 2 1198 1224
Engine 3 1269 1137
Technician: Curtis B., Technician replied 2 years ago

?? All appear to be in a normal range. What is concern? What is load factor? I assume these are generators.

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Customer reply replied 2 years ago
The engine get hot and DE accelerates
Technician: Curtis B., Technician replied 2 years ago

All do this, are one?

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Technician: Curtis B., Technician replied 2 years ago

Any coolant loss? Have the radiators been cleaned?

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Technician: Curtis B., Technician replied 2 years ago

Can exhaust be restricted? Any change in air flow around units?

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Customer reply replied 2 years ago
Two of them do
Not that I know of the air filters have been changed
Technician: Curtis B., Technician replied 2 years ago

All seem to be very close in operating temperatures. I would be checking the radiators and cleaning the external fins, and checking the fan operation, and the air flow around the units, as well as the exhaust system, to be sure it is not restricted by ice/snow, etc. May be time to call in the Cat Dealer.

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Customer reply replied 2 years ago
They are not awake yet
Technician: Curtis B., Technician replied 2 years ago

!! I wonder why I am!

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Technician: Curtis B., Technician replied 2 years ago

Lost internet! Please accept to close.

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Technician: Curtis B., Technician replied 2 years ago

What was the outcome on the units?

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