Exhaust Temperature Is Too High
Probable Causes
* Diagnostic codes
* Air inlet and exhaust system
* Air leak
Recommended Actions
Diagnostic Codes
Connect Caterpillar Electronic Technician (ET) in order to determine if any diagnostic codes for the injector solenoids are present. Check that the injector trim codes have been entered. Perform the "Injector Solenoid Test". Observe that the injector solenoids are being energized on Cat ET. Perform the "Cylinder Cutout Test". Locate the misfiring cylinder. Refer to the diagnostic functional test Troubleshooting, "Injector Solenoids".
Air Inlet and Exhaust System
1. Check the air inlet manifold pressure. Check for air inlet restrictions and/or leaks. Refer to the Systems Operation/Testing and Adjusting manual for more information.
2. Check for leaks between the exhaust manifold and the turbocharger. Check for exhaust restrictions. Refer to the Systems Operation/Testing and Adjusting manual for more information.
