1986 Mercury Sable LS, 4D SedanFACTORY OEM SERVICE PROCEDURE

Power Steering Pump Test Specifications

POWER STEERING PUMP TEST

Application  Pressure (psi) Idle  Pressure (psi) Relief  Flow (gpm) Min.  Flow (gpm) Max. 
1.9L All Models 150 750-950 1.10 2.20
2.0L Diesel 150 1100-1380 .95 2.20
2.3L Tempo/Topaz 150 1100-1380 1.64 2.20
2.3L Mustang, LTD, Thunderbird 150 850-1130 1.25 2.60
2.5L Sable & Taurus 150 1200-1480 .90 2.60
3.0L Sable & Taurus 150 1200-1480 .90 2.60
3.8L LTD / Marquis 150 950-1230 1.25 2.60
3.8L All Other Models 150 950-1230 1.40 2.60
5.0L Capri/Mustang 150 850-1130 1.35 2.60
5.0L Cougar/Thunderbird 150 950-1230 1.40 2.60
5.0L Continental/Mark VII 150 1200-1480 1.60 3.00
Factory Service Tools

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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.

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