Cooling System Testing, Maintenance, and Repair
Presentation
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Instructional Technology
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9th - 12th Grade
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Practice Problem
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Hard
Brandon Spiller
Used 50+ times
FREE Resource
16 Slides • 3 Questions
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Cooling System Testing, Maintenance, and Repair
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Multiple Choice
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Cooling System On-Board Diagnostics (OBD)
OBD Systems can monitor the following...
Coolant Temp
Coolant Level
Belt Tension
Performance out of range
Other related functions
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Inspecting the Cooling System...
A visual inspection will often reveal the source of a cooling system concern.
Coolant Leaks
Loose or Missing Belts
Low Coolant
Pump Noises
Radiator Blockage
Coolant in the oil
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Multiple Select
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Cooling System Faults can be grouped into three categories.
Coolant Leaks
Overheating
Overcooling
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Cooling System Leaks
Appear as wet, discolored areas around the engine
Smell like coolant (sweet)
Should be the same color as the coolant
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Multiple Select
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Keep in mind...
If there is no sign of external coolant leak, then the leak may be internal to the engine.
Cracked Block
Cracked Cylinder Head
Blown Head Gasket
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How to find hard to identify cooling system leaks...
Cooling System Pressure Test
Low air pressure is forced into the cooling system to simulate cooling system pressure
Most common cooling system leak detection tool
Adds around 14PSI to the cooling system.
When pressure is on the system, inspect the system for leaks
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Cooling System Testing, Maintenance, and Repair
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