papee
11-12-2009, 12:43 PM
I have had some emails from people after posting this in a help section on another site so I thought I'd post it here for information.
My ZJ would not shift right into second gear so I started searching the internet for an answer. Here is what I found.
Transmission throttle valve cable adjustment is extremely important to proper operation. This adjustment positions the throttle valve, which controls shift speed, quality, and part-throttle down shift sensitivity.
If cable setting is too loose, early shifts and slippage between shifts may occur. If the setting is too tight, shifts may be delayed and part throttle down shifts may be very sensitive.
Checking Throttle Valve Cable Adjustment
1. Turn ignition key to OFF position.
2. Remove air cleaner.
3. Verify that lever on throttle body is at curb idle position. Then verify that transmission throttle lever is also at idle (fully forward) position.
4. Slide cable off attachment stud on throttle body lever.
5. Compare position of cable end to attachment stud on throttle body lever:
* Cable end and attachment stud should be aligned (or centered on one another) to within 0.039 in. in either direction.
* If cable end and attachment stud are misaligned (off center), cable will have to be adjusted as described in Throttle Valve Cable Adjustment procedure.
6. Reconnect cable end to attachment stud. Then with aid of a helper, observe movement of transmission throttle lever and lever on throttle body.
* If both levers move simultaneously from idle to half-throttle and back to idle position, adjustment is correct.
* If transmission throttle lever moves ahead of, or lags behind throttle body lever, cable adjustment will be necessary. Or, if throttle body lever prevents transmission lever from returning to closed position, cable adjustment will be necessary.
Throttle Valve Cable Adjustment Procedure
1. Turn ignition switch to OFF position.
2. Remove air cleaner if necessary.
3. Disconnect cable end from attachment stud. Carefully slide cable off stud. Do not pry or pull cable off.
4. Verify that transmission throttle lever is in fully closed position. Then be sure lever on throttle body is at curb idle position.
5. Insert a small screwdriver under edge of retaining clip and remove retaining clip.
6. Center cable end on attachment stud to within 0.039 in.
NOTE: Be sure that as the cable is pulled forward and centered on the throttle lever stud, the cable housing moves smoothly with the cable. Due to the angle at which the cable housing enters the spring housing, the cable housing may bind slightly and create an incorrect adjustment.
7. Install retaining clip onto cable housing.
8. Check cable adjustment. Verify transmission throttle lever and lever on throttle body move simultaneously.
Be sure to check the connection at the transmission for corrosion and binding, also be sure that the return spring is still on the lever and hooked to transmission
My ZJ would not shift right into second gear so I started searching the internet for an answer. Here is what I found.
Transmission throttle valve cable adjustment is extremely important to proper operation. This adjustment positions the throttle valve, which controls shift speed, quality, and part-throttle down shift sensitivity.
If cable setting is too loose, early shifts and slippage between shifts may occur. If the setting is too tight, shifts may be delayed and part throttle down shifts may be very sensitive.
Checking Throttle Valve Cable Adjustment
1. Turn ignition key to OFF position.
2. Remove air cleaner.
3. Verify that lever on throttle body is at curb idle position. Then verify that transmission throttle lever is also at idle (fully forward) position.
4. Slide cable off attachment stud on throttle body lever.
5. Compare position of cable end to attachment stud on throttle body lever:
* Cable end and attachment stud should be aligned (or centered on one another) to within 0.039 in. in either direction.
* If cable end and attachment stud are misaligned (off center), cable will have to be adjusted as described in Throttle Valve Cable Adjustment procedure.
6. Reconnect cable end to attachment stud. Then with aid of a helper, observe movement of transmission throttle lever and lever on throttle body.
* If both levers move simultaneously from idle to half-throttle and back to idle position, adjustment is correct.
* If transmission throttle lever moves ahead of, or lags behind throttle body lever, cable adjustment will be necessary. Or, if throttle body lever prevents transmission lever from returning to closed position, cable adjustment will be necessary.
Throttle Valve Cable Adjustment Procedure
1. Turn ignition switch to OFF position.
2. Remove air cleaner if necessary.
3. Disconnect cable end from attachment stud. Carefully slide cable off stud. Do not pry or pull cable off.
4. Verify that transmission throttle lever is in fully closed position. Then be sure lever on throttle body is at curb idle position.
5. Insert a small screwdriver under edge of retaining clip and remove retaining clip.
6. Center cable end on attachment stud to within 0.039 in.
NOTE: Be sure that as the cable is pulled forward and centered on the throttle lever stud, the cable housing moves smoothly with the cable. Due to the angle at which the cable housing enters the spring housing, the cable housing may bind slightly and create an incorrect adjustment.
7. Install retaining clip onto cable housing.
8. Check cable adjustment. Verify transmission throttle lever and lever on throttle body move simultaneously.
Be sure to check the connection at the transmission for corrosion and binding, also be sure that the return spring is still on the lever and hooked to transmission