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INSPECTION PROCEDURE 13: Poor Acceleration: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEP 1. Check the engine system. 

    Refer to < 2.4L Engine >, Diagnosis - Symptom Chart - POOR ACCELERATION , or < 3.0L Engine >, Diagnosis - SYMPTOM CHART - POOR ACCELERATION .

    Q: Is the inspection result good? 

    YES  : Go to Step 2.

    NO:  Repair or replace the engine component(s).

  2. STEP 2. Check each brake and clutch. 

    Perform the torque converter stall test. Refer to TORQUE CONVERTER STALL TEST . Then check for the symptom.

    Q: Is the symptom eliminated? 

    YES  : The procedure is complete.

    NO:  Go to Step 3.

  3. STEP 3. Perform the hydraulic pressure test. 

    Perform the hydraulic pressure test. Refer to HYDRAULIC PRESSURE TEST . Then check for the symptom.

    Q: Is the symptom eliminated? 

    YES  : The procedure is complete.

    NO:  Go to Step 4.

  4. STEP 4. Check each brake system and each clutch system. 
    1. Remove the valve body cover and valve body. Refer to TRANSAXLE .
    2. Blow 108 kPa (15 psi) compressed air into the each brake oil orifice and clutch oil orifice of the transaxle case, and check if each brake and each clutch piston move and air pressure is maintained.

    Q: Is the air pressure maintained? 

    YES  : The procedure is complete.

    NO:  Go to Step 5.

    Fig 1: Locating Underdrive Clutch Oil Orifice Of Transaxle Case
    G04542437Courtesy of CHRYSLER CORP.
  5. STEP 5. Check each brake system and clutch system. 
    1. Remove the transaxle.
    2. Check the facings for seizure and piston seal ring for damage and interference with retainer. Repair or replace the faulty parts. Refer to TRANSAXLE , Underdrive Clutch and Input Shaft P.21D-59, Reverse and Overdrive Clutch P.21D-62. Then check for the symptom.

    Q: Is the symptom eliminated? 

    YES  : The procedure is complete.

    NO:  Go to Step 6.

    Fig 2: Locating Underdrive Clutch
    G04542438Courtesy of CHRYSLER CORP.
  6. STEP 6. Replace the PCM. 

    Q: Is the symptom eliminated? 

    YES  : The procedure is complete.

    NO:  Start over at  Step 1.

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