LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis - 4R70W >> Trouble Shooting >> Preliminary Inspection

Preliminary Inspection

NOTE: Any diagnosis should begin with confirming the customer's complaint. If possible, road test vehicle first, and note transmission performance for future reference during diagnosis.
NOTE: Prior to symptom diagnosis, record any stored DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM. If DTCs are present, diagnose and repair as instructed. If no DTCs are present, see SYMPTOM DIAGNOSIS (ELECTRONIC)  or SYMPTOM DIAGNOSIS (MECHANICAL)  .

Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Ensure vacuum hoses are properly routed, and are not pinched or cut. Inspect air induction system for possible vacuum leaks. Check PCM, sensors and actuators for physical damage. Check engine coolant level. Check transmission fluid level and condition.

Before vehicle is driven, ensure fluid is above DO NOT DRIVE hole on dipstick. See Fig 1 or Fig 2 . Drive vehicle about 20 miles, until transaxle is at normal operating temperature. Transaxle must be at normal operating temperature to ensure correct fluid level check.

Fluid level should be checked with vehicle on level surface. Start engine and shift transaxle into each gear position, ensuring each gear engages. Check fluid level in Park position with engine at idle. Fluid level should be within cross-hatched area of dipstick. Ensure the following:

Fig 1: Identifying Transmission Dipstick Markings (Crown Victoria, Expedition, Grand Marquis, Navigator, Pickup & Town Car)
G00095082Courtesy of FORD MOTOR CO.
Fig 2: Identifying Transmission Dipstick Markings (Explorer & Mountaineer)
G00095081Courtesy of FORD MOTOR CO.