1991 Lincoln Town Car Transmission
The 1991 Lincoln Town Car came equipped with a variety of transmission options, including:
* AOD (Automatic Overdrive) – A 4-speed automatic transmission with overdrive.
* AOD-E (Automatic Overdrive Electronic) – A 4-speed automatic transmission with overdrive and electronic controls.
* 4R70W (4-Speed Automatic Overdrive with Wide Ratio) – A 4-speed automatic transmission with overdrive and a wider gear ratio spread.
AOD Transmission
The AOD transmission was a popular choice for the 1991 Lincoln Town Car. It was a reliable and durable transmission that offered smooth shifting and good fuel economy. The AOD transmission had a gear ratio spread of 2.40:1, which provided good acceleration and highway cruising ability.
AOD-E Transmission
The AOD-E transmission was an upgraded version of the AOD transmission. It featured electronic controls that provided smoother shifting and improved fuel economy. The AOD-E transmission also had a wider gear ratio spread of 2.74:1, which provided better acceleration and highway cruising ability.
4R70W Transmission
The 4R70W transmission was the most advanced transmission available for the 1991 Lincoln Town Car. It featured a wide gear ratio spread of 3.06:1, which provided excellent acceleration and highway cruising ability. The 4R70W transmission also had a lock-up torque converter, which improved fuel economy.
Transmission Problems
The 1991 Lincoln Town Car transmission is a generally reliable component. However, like any mechanical device, it can experience problems over time. Some of the most common transmission problems include:
* Slipping – This occurs when the transmission cannot properly engage the gears, causing the vehicle to hesitate or lose power.
* Shifting problems – This can manifest as difficulty shifting gears, or the transmission shifting into the wrong gear.
* Leaking – Transmission fluid leaks can occur from a variety of sources, including the pan gasket, the torque converter seal, or the transmission lines.
* Overheating – This can occur if the transmission is subjected to excessive heat, such as from towing a heavy load or driving in stop-and-go traffic.
Transmission Maintenance
To help prevent transmission problems, it is important to perform regular maintenance, including:
* Changing the transmission fluid and filter – This should be done every 30,000 to 60,000 miles, or more often if the vehicle is used for towing or other heavy-duty activities.
* Inspecting the transmission lines and connections – This should be done periodically to check for leaks or damage.
* Checking the transmission fluid level – This should be done regularly to ensure that the transmission has the proper amount of fluid.
Transmission Repair
If your 1991 Lincoln Town Car transmission is experiencing problems, it is important to have it repaired by a qualified mechanic. Transmission repairs can be complex and expensive, so it is important to find a mechanic who has experience working on Lincoln vehicles.
Conclusion
The 1991 Lincoln Town Car transmission is a reliable and durable component that can provide years of trouble-free service. However, like any mechanical device, it can experience problems over time. By performing regular maintenance and having any problems repaired promptly, you can help keep your Town Car’s transmission running smoothly for many years to come.
