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Home >> Chrysler >> 2001 >> Sebring LX, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Diagnosis - F4A42 & F4A51 Automatic Transmission) >> Symptom Tests >> Test F: Shock Or Lag Time When Shifting From Neutral To Drive

Test F: Shock Or Lag Time When Shifting From Neutral To Drive

WARNING: This page is about a different variant/trim than selected.
NOTE: If shock or lag time of 2 seconds or more occurs when gearshift lever is moved from "N" to "D" position with engine idling, likely cause may be abnormal underdrive clutch pressure, or faulty underdrive clutch, valve body, throttle position sensor or faulty PCM.
  1. Using scan tool, attempt to actuate underdrive solenoid valve. If solenoid operation can be heard, go to next step. If solenoid operation cannot be heard, replace solenoid. See SOLENOID VALVES  under REMOVAL & INSTALLATION.
  2. If shock occurs when shifting, go to next step. If shock occurs while starting off, go to step  6 .
  3. Measure hydraulic pressure at underdrive clutch when shifting from Neutral to Drive. See HYDRAULIC PRESSURE TESTS  under PERFORMANCE TESTS. If pressure is within specification, go to next step. If pressure is not within specification, go to step  9 .
  4. Remove valve body assembly. See REMOVAL & INSTALLATION in appropriate SERVICING article in AUTOMATIC TRANSMISSIONS. Air check underdrive clutch. See Figure . If clutch air checks okay, go to step  9 . If clutch does not air check okay, go to next step.
  5. Remove transaxle assembly. See appropriate REMOVAL & INSTALLATION article in AUTOMATIC TRANSMISSIONS. Disassemble transaxle and inspect underdrive clutch. See appropriate OVERHAUL article. Check for burned clutch components, defective seals, and retainer interference. Repair as necessary.
  6. If shock occurrence is intermittent, go to next step. If shock occurrence is not intermittent, go to step  9 .
  7. Using scan tool, monitor throttle position sensor parameters. With throttle valve fully closed, display should read 535-735 mV. With throttle valve fully open, display should read 4500-5500 mV. If sensor parameters are within specification as accelerator pedal is slightly depressed and released, go to step  9 . If operation is not as specified, go to next step.
  8. Test throttle position sensor and sensor circuit. See THROTTLE POSITION SENSOR CIRCUIT  under CIRCUIT TESTS and THROTTLE POSITION SENSOR  under COMPONENT TESTS. Repair as necessary.
  9. Disassemble valve body and inspect. See appropriate OVERHAUL article. Check for loose bolts, damaged "O" rings, valves and valve bodies. Repair or replace as necessary. If symptom is eliminated, diagnosis is complete. If symptom is not eliminated, replace PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE.
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