How to Change an Automatic Transmission Modulator Valve
Is there smoke coming out from the transmission or manifold area of your vehicle? Do you experience delayed or harsh shifts? If yes, then you are in need of a new transmission modulator valve. Replacing it will surely save you the trouble of damaging your entire transmission. And doing the replacement by yourself will also make you stash out less money.
Difficulty level: Moderate
Tools that you'll need:
- Hydraulic floor jack
- Jack stands
- A set of wrenches
Step 1: Raise your vehicle using the hydraulic floor jack and support it with jack stands.
Step 2: Disconnect the vacuum hose that leads from the intake manifold to the transmission modulator valve. Simply pull it off from the intake manifold and valve, and set it aside.
Step 3: Unscrew the bolts from the bracket holding the valve onto the transmission. Twist the valve counterclockwise, and then take it out.
Step 4: Put the actuating rod into the hole of the new transmission modulator valve.
Step 5: Place the new valve into the receptacle hole. You will hear a snap when the O-ring has been sealed.
Step 6: Position the bracket on the new valve, and lock it with bolts.
Step 7: Reconnect the vacuum hose to the intake manifold and the valve, and secure it in place using hose clips or clamps.
Step 8: Remove the jack stands from the vehicle, and lower your car to the floor. Remove the jack.
Problem fixed! Now, you won't have to bear with your transmission shifting too late or too early. And as part of your car's maintenance, be sure to check your transmission fluid regularly to avoid improper lubrication, which can lead to overheating. Usually you need to change it every 15,000 to 30,000 miles. But if your vehicle is involved in a lot of heavy hauling, you'll need to change the transmission fluid more frequently.