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 MANUALSMERCURY1986SABLE LS, 4D SEDANREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEM3.0L EFI EEC IV TESTING
1986 Mercury Sable LS, 4D Sedan
3.0L EFI EEC IV Testing
1986 Mercury Sable LS, 4D SedanSECTION 3.0L EFI EEC IV Testing
- Diagnosis & Testing
- Quick Test
- Circuit Tests
- How To Use Circuit Tests
- Test A - No Start
- Test B - Vehicle Battery
- Test C - Reference Voltage
- Test D - Vane Air Temperature (Vat) Sensor
- Test E - Air Charge Temperature (Act) Sensor
- Test G - Engine Coolant Temperature (ECT) Sensor
- Test H - Map Sensor
- Test I - Knock Sensor
- Test J - Throttle Position Sensor (TPS)
- Test L - EGR Valve Position (EVP) & EGR Valve Regulator (EVR)
- Test M - Neutral A/C Switch
- Test N - Key Power Check
- Test O - Brake On/Off (Boo) Switch
- Test P - PSPS
- Test V - Inertia Switch
- Test W - EGR On/Off Check
- Test Y - Canister Purge (CANP) Check
- Test Z - By-Pass Air
- Test Cc - Inlet Air Solenoid (IAS)
- Test Dd - Variable Voltage Choke (VVC)
- Test Ee - Temperature Compensated Pump (TCP)
- Test GG - Wide Open Throttle A/C Cut-Out (WAC) A/C Demand
- Test JJ - Converter Clutch Override (CCO)
- Test KK - Dynamic Response Test
- Test Ll - Ignition Diagnostic Monitor (IDM)
- Test Mm - Spark Timing Check
- Test NN - No Codes/Codes Not Listed
- Test Oo - Erratic Ignition
- Test Pp - Pressure Feedback EGR (PFE) & EGR Valve Regulator (EVR)
- Test RR - Fuel Control
- Test SS - System Check
- Test TT - AXOD Transaxle
- AXOD Circuits
- Test UU - IRCM
- AXOD Transaxle Electrical System Diagnosis
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.