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Mercury
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1987
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Cougar LS, 5.0 F
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Repair and Diagnosis
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Engine Performance
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System
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THERMACTOR System
THERMACTOR System
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Description
Operation
Notes
Air Pump
Air By-Pass Valves
Notes
Normally Open Valves
Normally Closed Valves
Air Supply Control Valve
Combination Air By-Pass/Air Control Valve
Check Valves
Idle Tracking Switch
Pulse Air Valve
Dual THERMACTOR Air Control Solenoid Valve Assembly
Anti-Backfire (Gulp) Valve
Air Silencer
Electronic Control Assembly
THERMACTOR Idle Vacuum Valve
Testing
Air Pump
Air By-Pass Valve
Normally Open Valve Without Vacuum Vent
Normally Open Valve With Vacuum Vent
Normally Closed Valve
Air By-Pass/Air Control Valve
Normally Closed Valves
Air Supply Control Valve
Vacuum Check Valve
Idle Tracking Switch
Pulse Air Valve
Extended Idle Air By-Pass System