Does EGR use coolant?
Engine jacket water is used as the cooling medium in the EGR cooler in this example as well. In general, EGR can be cooled with engine coolant, ambient air or a low temperature liquid.
Can a faulty EGR valve cause coolant loss?
If the EGR cooling system (06) develops a leak, water can escape into the EGR system and pass through the engine, accounting for gradual coolant loss. If that happens, the whole EGR body – which is typically one big stainless steel component – needs to be changed out.
Why is my engine eating coolant?
Coolant loss may indicate a poorly maintained cooling system, a system fault, or even a change in driving patterns. For example, a coolant leak could have any of these causes: A leak that only occurs under certain operating conditions. An undiagnosed cracked engine block or cylinder head, or a blown gasket.
What causes EGR cooler failure?
Often, failure is caused by a combination of poor design and a tough work environment. Some stock coolers use thin, oval passages. These passages are subject to two main types of stress: heat and pressure. The EGR cooler heats and cools repeatedly during a normal drive cycle.
What kind of fuel does a Mack truck use?
CAUTION Diesel engines for 2006 and later model year vehicles are designed to operate only with ultra low sulfur diesel (ULSD) fuel. Use of fuel other than ULSD will reduce the efficiency and durability of the engine, permanently damage the advanced emission control systems, reduce fuel economy and possibly prevent the engine from running at all.
How to cool down a Mack truck engine?
If the engine is running, the starter temperature is too high, the transmission is not in neutral or the clutch pedal is not depressed, starter engagement is inhibited. Allow the engine to slow down and idle for 3 to 5 minutes before shutting it off. This allows the turbocharger to cool down and the cooling system to dissipate the engine heat.
What kind of sensor does a Mack truck use?
MACK is now using the ambient air temperature (AAT) sensor for on board diagnostic (OBD) monitoring. If a customer in- stalls a winterfront or blocks the radiator opening and blocks airflow to the sensor, they will likely set an OBD diagnostic trouble code (DTC) for inaccurate sensor data due to restricted airflow across the sensor.
What does OBD diagnostic trouble code mean for Mack truck?
If a customer in- stalls a winterfront or blocks the radiator opening and blocks airflow to the sensor, they will likely set an OBD diagnostic trouble code (DTC) for inaccurate sensor data due to restricted airflow across the sensor. Mack Body Builder Instructions CHU]