VALVE GP-SOLENOID 1882461 - Caterpillar

This topic is intended to provide the owner/operator suggestions for diagnosing minor engine problems. The guidelines are only brief descriptions of common sense remedies which can be performed without extensive knowledge of the engine operation.Refer to the Service Manual for extensive descriptions of problems and instructions for repair. Caterpillar recommends contacting your authorized Caterpillar dealer for major engine problems which require special tools and procedures.Troubleshooting a failure on an engine can be a difficult procedure. For complete troubleshooting information, see the Service Manual for your engine. All repairs should be made by a properly trained mechanic. Your Caterpillar dealer has the personnel and special tools needed to troubleshoot and make repairs to your engine.This list of problems, causes, and corrections will only give an indication of where a possible problem can be, and what repairs may be needed. Remember that a problem is not normally caused only by one part, but by the relation of one part with other parts.Your Caterpillar dealer is equipped with the necessary tools and personnel to provide assistance when necessary.Troubleshooting Index
1. Engine will not crank2. Engine cranks, but will not start3. Engine starts, but stalls immediately4. Erratic or unstable engine speed (rpm)5. Engine misfires or runs rough6. No or poor response to throttle7. Low power/Engine speed (rpm) restricted8. Intermittent engine shutdowns or power reduction9. Excessive vibration10. Valve train noise11. Excessive black or gray smoke12. Excessive white or blue smoke13. Low engine oil pressure14. Excessive lubrication oil consumption15. Coolant in engine oil16. Premature engine wear17. High exhaust temperature18. Abnormal engine coolant temperature19. Oil in cooling system20. Excessive fuel consumption21. Alternator fails to charge/charging rate high, low or unsteady22. Alternator noiseIf you have a problem that does not appear in this index, refer to the Service Manual for your engine and/or contact your Caterpillar dealer.1. Engine will not crank Batteries: Make sure battery cables are corrosion free and securely attached. Check battery output and charge or replace. Starting Circuit Wiring: Check wiring to starting motor solenoid. Starting Motor Solenoid: Inspect cables for corrosion, damage or loose connections. Starting Motor: Test solenoid and motor operation.2. Engine cranks, but will not start Fuel Supply: Check for empty fuel tank, plugged fuel tank connections, obstructed or kinked fuel suction lines, plugged fuel filter, air in fuel system or kinked, leaking or broken fuel lines. Fuel Transfer Pump: At cranking speed, the fuel transfer pump should supply fuel to the engine at 20 kPa (3 psi). If fuel pressure is less than 20 kPa (3 psi), replace the fuel filters. Check for air in the fuel system, sticking, binding or defective fuel bypass valve. Check lip-type seal on transfer pump drive shaft. When the engine is fully loaded the transfer pump should supply fuel at 415 to 450 kPa (60 to 65 psi). Engine Timing: See your authorized dealer. Shutoff Solenoid: Solenoid must be energized to shut off the engine. Actuate the control that operates the shutoff solenoid and listen for a "clicking" sound. If a "clicking" sound is