Description
Description: Propulsion Control Module (PCM) 150 Pro
Condition: New
Brand: Mercury Mercruiser®
Part Number: 8M2100904
Fitment Guide:
- Mercury Outboard 225HP 225HP V8 Sea Pro 2B529482 & Up Electrical
- Outboard 250HP 250HP V8 2B529482 & Up Electrical
- Outboard 300HP 300HP V8 2B529482 & Up Electrical
- Outboard 300HP 300HP V8 Sea Pro 2B529482 & Up Electrical
- Outboard 250HP 250HP V8 Sea Pro 2B529482 & Up Electric
- 4.6L 250 HP V8 DTS PCM, 8M0142723, 8M0149471, 8M6005749
- 4.6L 300 HP Verado PCM 8M0142964, 8M6005749, 8M0148147, PCM112
- Mercury-Mercruiser,8M0085642, ECM Engine Control Module 8.2L EC.
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A Propulsion Control Module (PCM) 8M2100904 is an electronic computer that controls and monitors a vehicle’s propulsion system – basically, the parts that make the vehicle move.
- Controls engine power — manages fuel, ignition, airflow, etc.
- Controls the transmission — helps determine when and how the vehicle shifts gears.
- Reads sensors — monitors things like temperature, speed, throttle position, pressure, and engine conditions.
- Coordinates systems — makes the engine and transmission work together efficiently.
- Improves fuel efficiency — adjusts operation based on driving conditions.
- Controls emissions — helps keep emissions within required limits.
- Detects problems — identifies faults and can turn on the Check Engine light or store diagnostic trouble codes.
- Protects the drivetrain — can reduce power or change operation if it detects conditions that could damage the engine or transmission.
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Signs of Faulty 8M2100904:
- Vehicle won’t start or go into Drive/Ready mode
- “Check Engine,” “Service Propulsion System,” or similar warning
- Reduced power / limp mode
- Poor or delayed acceleration
- Transmission shifting problems (on vehicles where the PCM controls the transmission)
- Intermittent stalling or loss of propulsion
- Charging problems on some EVs
- Communication/U-code faults when scanned with a diagnostic tool
- Cooling-fan or temperature-management problems, depending on the vehicle
- No communication with the PCM when a scan tool tries to connect
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