A/T - Gear Selector Cannot Be Moved Into Gear

91hyundai01

Group: TRANSMISSION/DRIVELINE


Number: 017


Date: JULY, 1990


Model: 1986-1989 EXCEL


Subject

AUTOMATIC TRANSMISSION GEAR SELECTOR BINDS


CONDITION: The automatic transmission gear selector can not be moved into gear because the shift cable is binding to the inner jacket of the shift cable housing.

CAUSE: Corrosion on the battery ground cable at the connection to the bell housing or corrosion inside the battery ground cable causes excessive resistance in the ground circuit. This causes the shift cable to act as an alternate grounding path, and the resultant heat generated from the high resistance in the shift cable softens the plastic inner jacket of the cable housing allowing it to stick to the cable.

DIAGNOSIS: 1. Remove the shift cable assembly and confirm that the cable is binding in the housing.
2. Perform the Ground Circuit Voltage Drop Test given on page 2 determine the condition of the ground circuit.

CORRECTION: Inspect the ground cable connection at the bell housing for corrosion. If corrosion is found, clean or replace the cable and connections as necessary. If no corrosion is seen, but the Ground Circuit Voltage Drop Test reveals an excessive voltage drop, there may be corrosion inside of the ground cable and replacement of the cable will be required. Inspect the upper radiator hose and clamp above the bell housing ground connection for coolant leakage. Repair as needed.

High resistance in the ground circuit must be corrected to prevent shift cable binding from reoccurring.

After proper grounding is confirmed, replace the damaged shift cable with a new assembly.





Ground Circuit Voltage Drop Test

Using a voltmeter as shown, connect the positive lead (+) to the starter motor case and the negative lead to the negative post of the battery.

Set the Voltmeter to a range that reads in tenths of a volt. While cranking the engine, the voltage reading should be 0.2V or less. If the reading is higher than 0.2V, check the ground cable and its connections.


0.2 Volts or less OK

More than 0.2 Volts Check ground circuit