why does my Toyota Corolla E170 (2013-2019) rev up but won’t go

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

553 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix transmission slipping issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Always use jack stands when working under the vehicle.

Symptoms

•Engine revs without acceleration
•Possible slipping of the transmission
•Unusual noises from the transmission area
•Check engine light illuminated
•Poor fuel economy
•Vibration when accelerating

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burnt smell.
3
Check for any visible leaks around the transmission area.
4
Test the throttle position sensor (TPS) with a multimeter to ensure it is functioning correctly.
5
Examine the engine mounts for any signs of wear or damage that could affect the transmission's alignment.
6
Perform a road test to determine if the problem occurs at specific speeds or gears.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench
•Transmission fluid pump
•Fluid catch pan
•Screwdriver set

Parts Required

•Transmission fluid (Toyota Type T-IV)
•Throttle position sensor (if replacement is necessary)
•Transmission mounts (if replacement is necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burnt smell.
3
Check for any visible leaks around the transmission area.
4
Test the throttle position sensor (TPS) with a multimeter to ensure it is functioning correctly.
5
Examine the engine mounts for any signs of wear or damage that could affect the transmission's alignment.
6
Perform a road test to determine if the problem occurs at specific speeds or gears.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Check the fluid level; if low, add the appropriate type of transmission fluid (Toyota Type T-IV).
3. If the fluid is burnt or discolored, drain the old fluid using a transmission pan and replace with new fluid.
4. Replace the transmission filter if applicable.
Tools Required: Transmission fluid pump, socket set, fluid catch pan.

3. Check and Replace Throttle Position Sensor (if necessary)

Sub-steps:
1. Locate the throttle position sensor on the throttle body.
2. Disconnect the electrical connector and remove the screws securing the sensor.
3. Install the new throttle position sensor and reconnect the electrical connector.
4. Clear any diagnostic trouble codes and perform a throttle relearn procedure if applicable.
Tools Required: Screwdriver set, multimeter.

4. Inspect and Replace Transmission Mounts (if necessary)

Sub-steps:
1. Raise the vehicle using jack stands for safety.
2. Locate the transmission mounts and inspect for cracks or deterioration.
3. Remove the bolts securing the damaged mounts and replace with new mounts.
4. Torque the new mount bolts to manufacturer specifications.
Tools Required: Socket set, torque wrench.