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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONENGINE CONTROL SYSTEM INPUTSAIR TEMPERATURE SIGNALS
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Air Temperature Signals
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Air Temperature Signals
NTC SENSOR INTEGRAL WITH AIR FLOW METER (M1.7-M42)
The intake air temperature signal is needed by the engine control module to correct the air volume input for changes in the intake air temperature (air density). The signal is used for the control of injection duration and ignition timing.
The sensor is an NTC resistor (negative temperature coefficient). It is located in the air flow meter in front of the measuring flap. Any changes to the intake air temperature are detected by the sensor and received by the control module as varying voltage signal.
SEPARATE SENSOR BY SYSTEMS WITH AIR MASS SENSORS (FILM & WIRE)
Intake air density (temperature) for injection is automatically compensated for by the air mass meter. But, an additional air temperature NTC sensor is required for ignition timing.
The sensor is located either directly in the intake manifold(s) or in the air filter box. Electrically the operation of the sensor is the same as with an air flow meter.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.