Most Reported Problem Reports for the 1991 Lincoln Mark VII

Incorrect starter relay can cause poor running/low fuel economy

for the Lincoln Mark VII

If you experience poor running and low fuel economy after the has been repaired, it could indicate that an incorrect starter relay was used. A diode-suppressed starter relay may be needed.

3 Reports

Me Too

Overheating Due to Damaged Water Pump

for the Lincoln Mark VII

Erratic engine coolant temperature or intermittent overheating can be caused by corrosion inside the water pump. The impeller may spin on the water pump shaft or the impeller may corrode. Either condition reduces coolant circulation resulting in engine overheating.

3 Reports

Me Too

Rough Idle and/or Engine Stalling Condition

for the Lincoln Mark VII

In high dust areas, problems with the EGR system are common. The filter for the EGR solenoid may plug and cause the EGR to activate when it should not; this can cause the engine to stall. The dirty filter should be replaced to correct this concern.

3 Reports

Me Too

Exhaust Leak in Fornt of Catalytic Converter

for the Lincoln Mark VII

An exhaust leak may develop in front of the catalytic converter. This type of leak should be corrected as soon a possible to avoid damaging the catalytic converter.

3 Reports

Me Too

Install insulator kit to prevent vibration caused by air compressor

for the Lincoln Mark VII

Vibration caused by the air compressor for the air suspension can be solved by installing an insulator kit at the air compressor mounting points.

3 Reports

Me Too

Corrosion May Form at Grounding Points Near Battery

for the Lincoln Mark VII

Corrosion can form at the grounding points near the battery. There may be electrical faults and the engine may crank but not start.

3 Reports

Me Too

Corrosion on Battery Cable Ends

for the Lincoln Mark VII

Check the battery cable ends frequently for corrosion. Corrosion can easily migrate under the cable insulation and cause numerous electrical faults and drivability issues.

3 Reports

Me Too

Ensure battery height is correct when replacing battery

for the Lincoln Mark VII

When replacing the , make sure the battery height is correct; a battery that is too tall can cause a short circuit when the hood is closed.

3 Reports

Me Too

Oil coated air filer causing mass air flow sensor failure

for the Lincoln Mark VII

Do not use air filters with oil-coated elements. They may cause premature failure of the mass air flow sensor; this is not covered under the warranty.

3 Reports

Me Too

Service power steering fluid regularly

for the Lincoln Mark VII

Even though the manufacturer does not call for regular servicing, our technicians recommend servicing the power steering fluid regularly.

3 Reports

Me Too

Sagging Suspension Due to Air Leaks

for the Lincoln Mark VII

Sagging suspension can be a result of air suspension struts and/or drier leaking air. These type of air leaks can lead to failure of the air suspension compressor.

3 Reports

Me Too

Turn Off Air Suspension System Before Jacking/Lifting Vehicle

for the Lincoln Mark VII

Prior to jacking or lifting a vehicle with air suspension, you must turn off the suspension switch. The switch is generally located in the trunk or on the right side of the passenger foot well.

3 Reports

Me Too

Adjust AC Clutch Air Gap For Proper Compressor Operation

for the Lincoln Mark VII

Checking and adjusting the AC compressor clutch air gap can extend the service life of the AC compressor.

2 Reports

Me Too

Car problem reports

Most reported 1991 Lincoln Mark VII problems

Incorrect starter relay can cause poor running/low fuel economy

Overheating Due to Damaged Water Pump

Rough Idle and/or Engine Stalling Condition

Exhaust Leak in Fornt of Catalytic Converter

Install insulator kit to prevent vibration caused by air compressor

Corrosion May Form at Grounding Points Near Battery

Corrosion on Battery Cable Ends

Ensure battery height is correct when replacing battery

Oil coated air filer causing mass air flow sensor failure

Service power steering fluid regularly

Sagging Suspension Due to Air Leaks

Turn Off Air Suspension System Before Jacking/Lifting Vehicle

Adjust AC Clutch Air Gap For Proper Compressor Operation