MERCURY MARINE MERCURY 150 EFI Stalling At Idle
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
86%
CONF
|
Throttle Position Sensor (TPS)
The TPS provides a critical voltage signal to the ECU to indicate the throttle plate is at the idle position; mechanical wear at the bottom of the sensor's potentiometer track causes signal dropouts, leading the ECU to cut fuel or timing incorrectly when the operator returns to neutral.
SKU: 854445A2
|
|
|
7%
CONF
|
Low Pressure Fuel Pump Diaphragm Kit
This mechanical pump uses crankcase pressure pulses to lift fuel to the VST; a pinhole or loss of elasticity in the diaphragm results in insufficient fuel volume at low RPMs, starving the high-pressure pump during idle when the engine's mechanical vacuum is at its lowest.
SKU: 857005A1
|
|
|
7%
CONF
|
Fuel Line and Primer Bulb Assembly (EPA Compliant)
Older fuel lines frequently undergo internal delamination due to ethanol exposure, creating 'crumbs' of liner material that clog the internal VST screen; replacing the assembly with modern low-permeability lines prevents debris from restricting the low-speed fuel circuit.
SKU: 8M0061885
|
DIY Repair Guide
Watch exactly how to replace the Throttle Position Sensor (TPS).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.