my Toyota RAV4 won't go over 30 mph what's causing this issue

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery before working on electrical components.
• Ensure the vehicle is on a flat surface and engage the parking brake.

2. Clean or Replace Throttle Body

• Tools Required: Screwdriver set, throttle body cleaner, rags
• Remove the air intake duct connected to the throttle body.
• Disconnect the throttle position sensor connector.
• Remove the throttle body bolts and carefully detach the throttle body.
• Clean the throttle body with throttle body cleaner and a rag.
• Reinstall the throttle body and reconnect the sensor and air duct.

3. Fuel System Inspection

• Tools Required: Fuel pressure gauge
• Locate the fuel rail on the engine.
• Connect the fuel pressure gauge to the fuel rail test port.
• Turn the ignition to the "ON" position (do not start the engine) and check the pressure reading.
• If the pressure is below specifications, inspect the fuel pump and filter for issues.

4. MAF Sensor Cleaning

• Tools Required: MAF sensor cleaner
• Locate the MAF sensor in the air intake system.
• Carefully disconnect the MAF sensor connector.
• Remove the MAF sensor from the intake duct.
• Spray MAF sensor cleaner onto the sensor element and allow it to dry.
• Reinstall the MAF sensor and reconnect the connector.

5. Transmission Fluid Check

• Tools Required: Transmission fluid dipstick (if applicable), funnel
• Locate the transmission dipstick and remove it.
• Wipe the dipstick clean and reinsert it to check the fluid level.
• If the fluid level is low, add the manufacturer-recommended transmission fluid.
• Check the condition of the fluid; if it is dark or burnt, consider a transmission fluid change.