FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Genesis/G70/IG (2017-2023)/my Genesis G70 has inconsistent power when accelerating, what could be wrong?

my Genesis G70 has inconsistent power when accelerating, what could be wrong?

Genesis G70 IG (2017-2023)

Severity: mediumDifficulty: medium2-4 hours
3 min read
574 words

Problem Statement

Learn how to diagnose and fix inconsistent power during acceleration in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before opening any components related to the intake or exhaust systems.

Symptoms

  • •Inconsistent acceleration response
  • •Engine stalling during acceleration
  • •Rough idle when the engine is running
  • •Check engine light illuminated
  • •Poor fuel economy
  • •Increased engine noise or knocking

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to identify any logged issues.
  2. 2Inspect the fuel system, including the fuel pump and fuel filter, for blockages or failures.
  3. 3Check the air intake system for leaks or restrictions, including the air filter and intake manifold.
  4. 4Examine the ignition system components, such as spark plugs and ignition coils, for wear or damage.
  5. 5Test the throttle position sensor (TPS) using a multimeter to ensure it is functioning correctly.
  6. 6Check for vacuum leaks in the engine’s intake manifold using a smoke machine or carburetor cleaner.

Solution

Solution

1. Preparation

  • Gather tools and parts needed for the repair.
  • Disconnect the battery to ensure safety while working on electrical components.

2. Fuel System Inspection

  • Sub-steps:
    1. Locate the fuel pump and fuel filter.
    2. Remove the fuel pump relay and check for proper voltage using a multimeter.
    3. Replace the fuel filter if it is clogged or has not been changed as per the maintenance schedule.
    4. Reinstall the fuel pump relay and reconnect the battery.

3. Air Intake System Repair

  • Sub-steps:
    1. Inspect the air filter and replace it if it is dirty or damaged.
    2. Check for any cracks or loose connections in the intake ducting.
    3. Clean the throttle body using throttle body cleaner and a soft cloth.
    4. Replace any damaged gaskets in the intake manifold.

4. Ignition System Replacement

  • Sub-steps:
    1. Remove the engine cover to access spark plugs and ignition coils.
    2. Check each spark plug for wear; replace them if they show signs of damage or excessive gap.
    3. Test each ignition coil using a multimeter and replace any that are faulty.
    4. Reinstall all components securely.

5. Throttle Position Sensor Adjustment

  • Sub-steps:
    1. Locate the TPS on the throttle body.
    2. Disconnect the electrical connector from the TPS.
    3. Using a multimeter, measure the resistance and ensure it meets manufacturer specifications.
    4. If out of spec, replace the TPS and reconnect the electrical connector.

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
  • Throttle body cleaner
  • Screwdrivers
  • Torque wrench

Parts Required

  • Fuel filter
  • Spark plugs
  • Ignition coils (if faulty)
  • Throttle position sensor (if faulty)
  • Air filter

Additional Information

Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

medium

Tools

6 items

Parts

5 items

Related Faults

Discover similar issues

  1. my Genesis G70 AC is not blowing cold air how to fix it

    Learn how to diagnose and fix the AC not blowing cold air in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:HVAC
    Symptoms
    • •A/C compressor not engaging
    • •Weak or no airflow from vents
    • +{count} more
  2. why does my Genesis G70 engine sound rough after warming up

    Learn how to diagnose and fix a rough engine sound in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Engine
    Symptoms
    • •Rough engine idle
    • •Increased engine noise when warmed up
    • +{count} more
  3. why does my Genesis G70 make a hissing noise under the hood

    Learn how to diagnose and fix a hissing noise under the hood of your Genesis G70. Step-by-step guide with diagnostic procedures and repair instruction...

    Component:Engine
    Symptoms
    • •Hissing noise from the engine compartment
    • •Possible loss of engine power
    • +{count} more
  4. my Genesis G70 stalls when coming to a stop what could be wrong

    Learn how to diagnose and fix engine stalling issues in Genesis G70. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Component:Engine
    Symptoms
    • •Engine stalling when decelerating or coming to a stop
    • •Rough idle when the engine is running
    • +{count} more
  5. why is my Genesis G70 rear end making noise when turning

    Learn how to diagnose and fix rear end noise when turning in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Suspension
    Symptoms
    • •Grinding or whining noise when making turns
    • •Clunking sound during acceleration or deceleration
    • +{count} more
  6. why does my Genesis G70 transmission slip when shifting

    Learn how to diagnose and fix transmission slipping in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Transmission
    Symptoms
    • •Transmission slips during gear changes
    • •Delayed engagement when shifting from park to drive/reverse
    • +{count} more

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation