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.
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HOMESERVICE MANUALSMERCURY1991COUGAR LS, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMESEATSPOWER SEATS
1991 Mercury Cougar LS, 3.8 4
Power Seats
1991 Mercury Cougar LS, 3.8 4SECTION Power Seats
- Description & Operation
- Component Locations
- Trouble Shooting
- System Tests
- Notes
- Test A: Power Seat Is Completely Inoperative
- Test B: One Or More Power Seat Positions Are Inoperative
- Test C: Power Seat Moves But Is Noisy
- Test D: Power Seat Moves But Is Loose
- Test E: Power Seat Does Not Make Full Travel
- Test F: Power Seat Does Not Move Horizontally And/Or Vertically
- Test G: Power Seat Motor Diagnosis
- Test H: Both Lumbar Seats Inoperative
- Test I: One Lumbar Seat Is Inoperative
- Test J: Lumbar Motor Pump Inoperative
- Test K: Air Will Not Fill Lumbar Support Bag
- Test L: Air Fills Lumbar Support Bag But Will Not Hold Air Pressure For An Extended Length Of Time
- Test M: Lumbar Switch Inflates Back Bolster
- Test N: Bolster Motor Pump Inoperative
- Test O: Bolster Will Not Move Or Only Partially Moves While Inflating
- Test P: Bolster Moves But Will Not Maintain Inflate Position
- Test Q: Bolster Switch Inflates Lumbar Support
- Test R: Bolster Inflates But Does Not Retract
- Test S: Bolster Detaches From Seat
- Component Tests
- Removal & Installation
- Torque Specifications
- Wiring Diagrams
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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.