Engine Controls - Tests W/O Codes - 7.3L Diesel: Symptoms: Notes

Symptom checks cannot be used properly unless problem occurs while vehicle is being tested. To reduce diagnostic time, ensure SELF-DIAGNOSTIC CIRCUIT TESTS in the TESTS W/CODES - 7.3L DIESEL article were performed before diagnosing a symptom. Symptoms available for diagnosis are as follows:

• No Crank/Slow Crank
• Stalls After Start
• No Start/Normal Crank Or Hard Start/Long Crank
• Engine Will Only Idle
• Slow Return To Idle
• Engine Runs Rough (While Driving)
• Fast Idle
• Runs Rough, Misses, Buck/Jerk, Hesitation Or Stumbles
• Surge (On Acceleration Or Cruise)
• Loss Of Power/Poor Fuel Economy
• Malfunction Indicator Light (MIL)
• Exhaust Smoke
• Cruise (Speed) Control Inoperative
• Transmission Control Indicator Light (TCIL)
• Improper Transmission Shift
• High Oil Consumption/Leaks
• Rough Idle/Stalls When Engaging Clutch