How to Change the Transmission Fluid in a 1989 Town Car

The 1989 Ford Town Car is known for its reliability and comfort, but like any car, it requires regular maintenance. One crucial aspect of keeping your Town Car running smoothly is changing the transmission fluid. This article will guide you through the process of changing the transmission fluid in your 1989 Town Car.

Materials You Will Need

• New transmission fluid (Dexron III or Mercon) ― approximately 6 quarts
• Transmission fluid drain pan
• Torque wrench
• 17mm socket wrench
• Funnel
• Rag or shop towels
• Gloves
• Jack and jack stands (optional but recommended)

Procedure

Step 1⁚ Warm Up the Transmission

Start your Town Car and let it run for a few minutes to warm up the transmission fluid. This will make the fluid thinner and easier to drain.

Step 2⁚ Locate the Transmission Drain Plug

The transmission drain plug is located on the bottom of the transmission pan, typically near the passenger side. It is usually a 17mm hex bolt.

Step 3⁚ Drain the Old Fluid

Place the drain pan under the drain plug. Unscrew the drain plug using your 17mm socket wrench. Be careful, as the fluid will be hot. Allow the fluid to drain completely.

Step 4⁚ Remove the Transmission Pan (Optional)

If you want to replace the transmission pan gasket, you will need to remove the pan. This involves removing the bolts that attach the pan to the transmission housing. Be sure to note the location of each bolt for reinstallation.

Step 5⁚ Clean the Pan and Gasket Surface

If you removed the transmission pan, clean the pan and the mating surface on the transmission using a rag and a degreaser. Remove any old gasket material.

Step 6⁚ Install New Gasket (Optional)

If you replaced the gasket, install the new gasket onto the transmission housing. Make sure it is properly seated and centered.

Step 7⁚ Reinstall the Transmission Pan (Optional)

If you removed the pan, reinstall it using the bolts you removed earlier. Tighten the bolts evenly and to the specified torque. Be careful not to overtighten the bolts.

Step 8⁚ Reinstall the Drain Plug

Replace the drain plug and tighten it to the specified torque. Do not overtighten.

Step 9⁚ Fill the Transmission with New Fluid

Locate the transmission dipstick. It is usually located on the passenger side of the engine near the front of the transmission. Remove the dipstick and add new transmission fluid through the dipstick tube. Add fluid until it reaches the “full” mark on the dipstick.

Step 10⁚ Start the Engine and Check Fluid Level

Start the engine and let it run for a few minutes. Then, check the fluid level again. Add more fluid if necessary. You may need to repeat this process a few times to ensure the fluid level is correct.

Additional Tips

• It is recommended to use a transmission fluid exchange machine to fully flush the transmission fluid. This will ensure that all of the old fluid is removed and replaced with new fluid.
• Check the condition of the transmission filter and replace it if necessary. A dirty filter can restrict fluid flow and damage the transmission.
• Follow the maintenance schedule in your owner’s manual for transmission fluid changes. This will help to keep your transmission running smoothly for many years to come.

By following these steps, you can change the transmission fluid in your 1989 Ford Town Car and ensure that your transmission is properly lubricated and protected.