HIGH ACCELERATOR PEDAL EFFORT INOPERATIVE CRUISE CONTROL
MODELS AFFECTED: 1987-1988 CIMARRONS
A condition of high accelerator pedal effort and/or an inoperative cruise control system may be experienced on some 1987-1988 Cimarrons.
This condition may be caused by wear in the throttle body actuating linkage. A service kit, P/N 17112171 (1987) or 17112174 (1988), has been released to repair this condition. The following procedure should be used:
1. Place vehicle in park. Set parking brake and disconnect negative battery cable.
2. Disconnect throttle valve (TV), accelerator, and cruise control cables from the throttle body.
3. Remove the circular "E" clip (refer to Figure 1, Item 1) from the throttle actuating link stud of the throttle lever (refer to Item 12).
4. Using a T40 Torx Bit, rotate the throttle actuating lever screw (Item 3) CLOCKWISE to remove it from the throttle body.
CAUTION:
KEEP FINGERS CLEAR OF THROTTLE ACTUATING LEVER. SPRINGS ARE UNDER TENSION AND WILL UNWIND WHEN TENSION IS RELEASED. SPRINGS MAY BECOME DETACHED AND CAUSE INJURY. WEAR SAFETY GLASSES.
IMPORTANT: Left hand threads on screw.
If breakage of the screw occurs, replace the throttle body assembly.
5. Remove the throttle actuating lever and bushing assembly (Item 4), thrust washers, spring pack retainers, and springs.
6. Using compressed air, clean threads in throttle body casting and on replacement screw.
7. Install the throttle body service linkage kit (with rubber band still in place) to the throttle body assembly by hand tightening (left-hand threads) the throttle actuating lever screw in a COUNTERCLOCKWISE direction.
8. Position the casting side pawl (Item 5) in the semicircular groove (Item 10), and the lever side pawl (Item 6) in the notch area of the throttle actuating lever.
9. Install the throttle actuating link (Item 2) to the throttle lever stud using a new "E" clip.
10. Cut and remove the rubber band (Item 11).
IMPORTANT: DO NOT REMOVE THE SPRING PACK RETAINER (ITEM 9).
11. Recheck the position of the pawls, check freedom of movement of linkage, then torque the throttle actuating lever screw to 10-12 lb. ft. (14-16 N-m).
IMPORTANT: DO NOT OVERTORQUE. IF AFTER THE THROTTLE ACTUATING SCREW IS PROPERLY TORQUED IT APPEARS LOOSE, THEN THE ENTIRE THROTTLE BODY IS TO BE REPLACED.
12. Remove spring pack retainer by pulling on tab.
13. In accordance with instructions in Service Information Manual Section 6C, when performing service on accelerator controls, inspect the linkage and cables for binding, interference with other components, or physical damage (kinks, burns, etc.):
Grasp accelerator cable terminal and move it in and out. Cable should move freely with no binding or sticking.
Pull cable out and release the terminal. Due to pedal weight, the cable should return to its fully-retracted position without delay.
If required, replace cable per Service Information Manual Section 6C.
14. Install the throttle valve (TV) cruise control, and accelerator cables.
15. Adjust TV cable and cruise control cable per the procedures in Service Information Manual Sections 7A and 9B respectively.
16. Check linkage operation prior to starting engine by actuating accelerator pedal several times throughout its full range:
With the aid of a diagnostic scanner such as a Tech 1, check to ensure that the throttle lever reaches full "wide-open" upon fully depressing the pedal and that it returns to the idle position without delay upon releasing the pedal.
Throttle should operate smoothly with no binding or sticking. Pedal operating efforts required to reach full throttle should not be excessive.
If operation is unsatisfactory, repair or replace other linkage components (pedal, cables, etc.) as required per the Service Information Manual procedures.
NOTICE: DO NOT ATTEMPT TO USE LUBRICANT ON CABLES; INTERNAL DAMAGE MAY RESULT. UNSATISFACTORY OPERATION IS TO BE CORRECTED BY CABLE REPLACEMENT ONLY.
For warranty purposes use Labor Operation T1396 at .4 hour.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
