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BMW
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1989
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325i 2D Convertible, Automatic
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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Basic Testing
Basic Testing
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Introduction
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Compression
Exhaust System Backpressure
Fuel System
Fuel Pressure
Notes
Fuel Pump Relay
MOTRONIC Control Unit (MCU)
Notes
Power Circuits
Ground Circuits
MCU Location
Engine Speed/Reference Sensor & Circuit
Sensor & Circuit Checking Procedure
Ignition Checks
Spark
Ignition Coil Power Source
Ignition Coil Resistance
MCU Power & Ground Circuits
Idle Speed & Ignition Timing
Summary