Engine Overspeeds
Use this procedure to troubleshoot an engine overspeed. Also, use this procedure if one of the following event codes is active or logged.
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J1939 Code and Description | CDL Code and Description | Comments |
---|---|---|
190-0
Engine Speed : High - most severe (3) |
E362 (3)
Engine Overspeed |
The code requires factory passwords to be cleared. |
190-15
Engine Speed : High - least severe (1) |
E362 (1)
Engine Overspeed |
The code is logged. |
- Engine load
- Turbocharger
- Inlet air
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Troubleshooting Test Steps | Values | Results |
---|---|---|
1. Check for a Sudden Drop of Engine Load A. Converse with the operator about the overspeed event. |
Engine Load |
Result: The operator confirms that the overspeed was caused by a sudden drop of engine load. Return to service. Result: The overspeed was not caused by a sudden drop of engine load. Proceed to Test Step 2. |
2. Check for Proper Operation of the Turbocharger A. Check for any oil that may be leaking into the inlet air. |
Turbocharger |
Result: The turbocharger is not leaking oil into the inlet air. Proceed to Test Step 3. Result: The turbocharger is leaking oil into the inlet air. Repair: Repair or replace the turbocharger. If the problem is not resolved, proceed to Test Step 3. |
3. Check the Quality of the Inlet Air A. Check for combustible gases in the surrounding atmosphere. |
Air Quality |
Result: The atmosphere has combustible gases. Repair: Do not operate the engine in an environment with combustible gases. Verify that the repair eliminated the problem. |
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).
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