AutoZone Product & HowTo Info | |

Search suggestions

    My Vehicles

    Add a Vehicle

    Find a Store

    Select Store

    SAVE 20% + GET A $10 GIFT CARD ON ONLINE SHIP TO HOME ORDERS OVER $100.

    Use Code: 20STACK10

    See Details

    Transmission Fluid

    Inspect/Replace

    Electrical Connections

    Check all electrical connections to the transmission.

    Typical arrangement of eletrical components on a modern transaxle. Courtesy of American Honda Motor Co., Inc.
    • To check the connectors, release the locking tabs and disconnect them, one at a time, from the transmission.
    • Carefully examine them for signs of corrosion, distortion, moisture, and transmission fluid.

    A connector or wiring harness may deteriorate if automatic transmission fluid reaches it. Also check the connector at the transmission.

    Extension Housing

    An oil leak stemming from the mating surfaces of the extension housing and the transmission case may be caused by loose bolts. To correct this problem, tighten the bolts to the specified torque. Also check for signs of leakage at the rear of the extension housing.

    Fluid leaks from the seal of the extension housing can be corrected with the transmission in the car. Often, the cause for the leakage is a worn extension housing bushing, which supports the sliding yoke of the drive shaft.

    When the drive shaft is installed, the clearance between the sliding yoke and the bushing should be minimal.

    • If the clearance is satisfactory, a new oil seal will correct the leak.
    • If the clearance is excessive, the repair requires that a new seal and a new bushing be installed.
    • If the seal is faulty, the transmission vent should be checked for blockage.

    To find out more about tranmission fluid leaks, check out the following parts:

    • Oil pan - transmission
    • Speedometer drive gear
    • Torque converter

    AutoZone Logo