Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SWITCHADJUSTMENTS
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Throttle Position Switch: Adjustments
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Adjustments
Closed Throttle Position (CTP) Switch, Adjusting
Adjusting
- Remove throttle body to adjust CTP switch.
NOTE: When adjusting the CTP switch, the Throttle Position (TP) sensor is adjusted at the same time.
- Loosen both CTP switch mounting screws.
- Rotate CTP switch in direction shown (arrow) until reaching stop. While doing so, do not depress accelerator pedal.
- Tighten CTP switch in this position.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.