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P1740-TCC O/D SOL PERFORMANCE (GAS) (CONTINUED) 7. GOVERNOR PRESSURE SYSTEM TEST Turn the ignition off to the lock position. Connect a 0 to 2068 kPa or 0 to 300 PSI pressure gauge to the Overdrive Clutch Test Port. Connect a 0 to 2068 kPa or 0 to 300 PSI pressure gauge to the Governor Test Port. Start the engine. NOTE: Allow the transmission temperature to rise to normal operating temperature. NOTE: The Governor pressure should rise to above 137.8 kPa or 20 PSI, shortly after the OD pressure Did the pressures act as described? Yes >> Go To 8 No >> Go To 9 8. CHECK IF THE OIL PAN CONTAINS EXCESSIVE DEBRIS Remove the transmission oil pan per the Service information. Is the transmission fluid burnt or does the transmission oil pan contain excessive debris? Yes >> Repair internal transmission as necessary. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 48RE - REMOVAL) Perform RE TRANSMISSION VERIFICATION TEST VER - 1 (GAS). (Refer to 21 - TRANSMISSION/ No >> Go To 10 9. CHECK THE 3-4 SHIFT SOLENOID Turn the ignition off to the lock position. Replace the 3-4 Solenoid per the Service information. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - Connect a 0 to 2068 kPa or 0 to 300 PSI pressure gauge to the Overdrive Clutch Test Port. Connect a 0 to 2068 kPa or 0 to 300 PSI pressure gauge to the Governor Test Port. Start the engine. NOTE: Allow the transmission temperature to rise to normal operating temperature. NOTE: The Governor pressure should rise above 137.8 kPa or 20 PSI, shortly after the OD pressure should Did the pressures act as described? Yes >> Test Complete. No >> Overhaul the transmission per the Service Information. Carefully inspect the seals and clutches related to the OD Clutch. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 48RE - REMOVAL) Perform RE TRANSMISSION VERIFICATION TEST VER - 1 (GAS). (Refer to 21 - TRANSMISSION/ 21 - 756 AUTOMATIC TRANSMISSION - 48RE - GAS - ELECTRICAL DIAGNOSTICS DR/DH |