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 INPUTSHOT FILM AIR MASS SENSOR
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Hot Film Air Mass Sensor
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Hot Film Air Mass Sensor
The air volume input signal is produced electrically by the Hot Film Air Mass Sensor. The sensor operates in the same manner as the hot wire air mass sensor.
The hot film sensor uses a heated metal film in the air flow stream instate of a heated wire. This design provides improved reliability and eliminates the need for the "clean burn" function after engine shut-down.
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.