how to fix my Toyota Corolla E170 that shakes when I start it

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

583 words

Problem Statement

Learn how to diagnose and fix engine shaking on start in Toyota Corolla E170. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow engine to cool before opening any components.

Symptoms

•Engine shakes or vibrates upon starting
•Possible rough idle after starting
•Check engine light illuminated
•Unusual noises from the engine compartment
•Potential loss of power during acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check engine oil level and condition; low or dirty oil can cause rough operation.
3
Inspect engine mounts for damage or wear, as faulty mounts can contribute to excessive vibrations.
4
Check for vacuum leaks around hoses and intake manifold.
5
Inspect spark plugs and ignition coils for wear or damage, as misfiring can cause shaking.
6
Test the fuel system pressure to ensure proper fuel delivery.

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
•Socket set
•Torque wrench
•Fuel pressure gauge
•Jack and jack stands

Parts Required

•Engine mounts (if damaged)
•Spark plugs
•Ignition coils (if faulty)
•Vacuum hoses (if damaged)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check engine oil level and condition; low or dirty oil can cause rough operation.
3
Inspect engine mounts for damage or wear, as faulty mounts can contribute to excessive vibrations.
4
Check for vacuum leaks around hoses and intake manifold.
5
Inspect spark plugs and ignition coils for wear or damage, as misfiring can cause shaking.
6
Test the fuel system pressure to ensure proper fuel delivery.

Solution

1. Preparation

Gather tools and parts required.
Disconnect the negative battery terminal to prevent electrical shock.
Allow the engine to cool if it has been running.

2. Inspect Engine Mounts

Visually inspect the engine mounts for cracks or damage.
Use a jack to support the engine slightly and check for excessive movement when the engine is started.
If a mount is damaged, remove the bolts securing the mount to the engine and chassis.
Replace the damaged mount with a new one, ensuring proper torque specifications are followed (usually around 40-60 ft-lbs, but check specific service manual).

3. Replace Spark Plugs and Ignition Coils

Remove the engine cover if applicable.
Disconnect the electrical connectors from the ignition coils.
Unscrew the coil packs and remove them from the spark plugs.
Use a spark plug socket to remove old spark plugs.
Install new spark plugs, ensuring the gap is set to manufacturer specifications (typically around 0.043 inches).
Reinstall ignition coils and secure them with bolts, reconnecting electrical connectors.

4. Check for Vacuum Leaks

Inspect all vacuum hoses for cracks, tears, or disconnections.
Use a smoke machine or carburetor cleaner around the intake manifold and hoses to detect leaks.
Replace any damaged hoses and ensure all connections are secure.

5. Verify Fuel System Pressure

Connect a fuel pressure gauge to the fuel rail.
Turn the ignition on without starting the engine to check the pressure.
Compare the reading to manufacturer specifications (usually around 40-50 psi).
If pressure is low, inspect the fuel pump and filter, replacing as necessary.