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 MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONENGINE CONTROL SYSTEM INPUTSTHROTTLE POSITION SENSOR (TPS)
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Throttle Position Sensor (TPS)
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Throttle Position Sensor (TPS)
A potentiometer provides the throttle position input to the ECM. Throttle position and rate are detected from the potentiometer. The sensor receives its supply voltage from the ECM. As the throttle is opened or closed, a varying voltage input signal is produced that represents the throttle position angle.
If a malfunction occurs, relative throttle position is determined from the RPM and air mass sensor inputs (FAIL-SAFE) and the fault is stored in memory.
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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.