cooling system diagnostics

Technician A states to first verify the customers complaint before attempting to diagnose the problem. Technician B states all the air needs to be removed from the system before an effective diagnosis can begin. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Customer states they were driving down the highway and their vehicle began to overheat. When they allowed the engine to cool, they noticed the system was low. They topped the system off and it hasn’t overheated since. Technician A says to check for air in the system. Technician B says to perform a system pressure test to determine where the fluid went. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Hoses are being replaced due to oil saturation. The technician noticed the hoses were sticky and swollen from oil contamination. Therefore, he recommended replacing them. What else should have been corrected/replaced/checked?

• Coolant

• Thermostat

• Head gaskets

• Oil cooler assembly

A customer brought their vehicle back after picking it up from the shop merely ten minutes ago. The service manager brings you the keys and says he couldn’t find the original technician who worked on it. He said the customer is complaining that it overheated. The service manager informs you that the other technician just installed new radiator hoses. What is most likely the cause?

• Thermostat failure

• Plugged Radiator

• Air in the system

• Original complaint wasn’t properly diagnosed

Two technicians are discussing operation. Technician A states you cannot properly diagnose a customer's concern if you do not verify it for yourself first. Technician B states that a vehicle should never be delivered to a customer that has not been properly quality checked by someone other than the original technician. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B