Inspection and Verification
Note. Some vehicles are equipped with adjustable brake and accelerator pedals. The adjustable brake and accelerator pedals and the fixed brake and accelerator pedals are serviced as an assembly. For additional information on diagnosing and testing these components, refer to HYDRAULIC BRAKE ACTUATION .
Note. Care should be exercised when carrying out service on or around the accelerator pedal linkage and controls.
- Inspect the accelerator pedal and shaft and attaching linkage for damage or distortion which would bind or limit accelerator travel.
- Inspect the accelerator cable for kinks or fraying which may cause binding.
- Inspect the engine idle speed adjustment to make sure of correct idle speed specification after any accelerator linkage adjustment or repair.
- Inspect throttle body for excessive wear or damage.
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| Excessive effort needed to depress accelerator pedal and shaft | Worn accelerator lever pivot bushing. | INSTALL a new accelerator and brake pedal assembly. REFER to HYDRAULIC BRAKE ACTUATION . |
| Accelerator cable binding. | INSTALL a new accelerator cable. | |
| Worn or damaged throttle body. | INSTALL a new throttle body. REFER to FUEL CHARGING & CONTROLS . | |
| Accelerator pedal and shaft feels rough or raspy | Frayed or binding accelerator cable. | INSTALL a new accelerator cable. |
| Worn or damaged throttle body. | INSTALL a new throttle body. REFER to FUEL CHARGING & CONTROLS . | |
| Accelerator pedal and shaft bind or stick | Kinked accelerator cable. | INSTALL a new accelerator cable. |
| Foreign object caught in accelerator pedal linkage. | CHECK the accelerator pedal linkage. | |
| Worn or damaged throttle body. | INSTALL a new throttle body. REFER to FUEL CHARGING & CONTROLS . | |
| High engine idle speed | Kinked accelerator cable. | INSTALL a new accelerator cable. |
| Foreign object caught in accelerator pedal linkage. | CHECK the accelerator pedal linkage. | |
| Incorrect engine idle speed. | See INTRODUCTION - GASOLINE article, for diagnosis and testing of the idle control system. |
SYMPTOM CHART
Scheme 1
For additional information, refer to the appropriate component removal and installation procedures.