MIkeMota Auto-care services

MIkeMota Auto-care services MikeMota Auto-Care is a Team of qualified auto Technicians ready to impact quality repairs and maintain your vehicle.

At Mikemota auto's we treat your automobile like family.

Did you know? 02 sensors and functions.🔹 Sensor 1 – Upstream / Before the Catalytic Converter / UpstreamThis sensor is l...
16/10/2025

Did you know? 02 sensors and functions.

🔹 Sensor 1 – Upstream / Before the Catalytic Converter / Upstream

This sensor is located before the catalytic converter, usually on the exhaust manifold or just at the beginning of the pipe. Its main function is to inform the ECU of the actual air/fuel ratio, so that the injection system can adjust the injection timing in real time (closed loop).

Main variants:
➡️ Narrow band: oscillates between 0.1 V and 0.9 V.
➡️ A/F Sensor or Wideband: accurately measures the air/fuel ratio (±3 mA current).

Failure symptoms:
🔸 Unstable idle, increased fuel consumption, black smoke, or loss of power.
🔸 Check Engine Light with codes such as P0130 to P0135.

Detection Method:
🔹 On the scanner, the voltage should fluctuate constantly (0.1–0.9 V) or the wideband current should vary around zero.
🔹 If the signal remains fixed, there is element contamination, internal damage, or loss of heater reference.
🔹 It can be verified with an oscilloscope; it should show rapid switching (2 to 4 times per second).

🔹 Sensor 2 – Downstream / After the Catalytic Converter / Downstream

This sensor is mounted after the catalytic converter and does not regulate the mixture; its task is to monitor the efficiency of the catalytic converter by comparing its reading with that of sensor 1. If both signals are very similar, the catalytic converter is not storing oxygen properly.

Main variants:
➡️ Conventional zirconia or 4-wire planar sensor.
➡️ In some modern systems, wideband downstream is used for advanced OBD-II diagnostics.

Failure Symptoms:
🔸 Check Engine light on, codes P0136 to P0141.
🔸 Slight loss of power or high consumption if the system enters open mode.

Detection Method:
🔹 On the scanner, the voltage from sensor 2 should remain stable between 0.6 and 0.8 V if the catalytic converter is in good condition.
🔹 If it oscillates the same as sensor 1, the catalytic converter is degraded.
🔹 On the oscilloscope, a slow or almost flat signal is observed; if it remains fixed at 0.45 V, there may be an open circuit or contamination.

------ AUTOMOBILE 101 ------>>> 2GR vs 3MZ ENGINES
12/04/2025

------ AUTOMOBILE 101 ------
>>> 2GR vs 3MZ ENGINES

Experiencing a lack of acceleration can be frustrating. some Common causes include:1. Faulty Accelerator Pedal Sensor: ...
15/03/2025

Experiencing a lack of acceleration can be frustrating. some Common causes include:

1. Faulty Accelerator Pedal Sensor:
Sends incorrect signals to the engine.

2. Clogged Air Filter: Restricts airflow, reducing power.

3. Faulty Mass Airflow Sensor: Causes incorrect air-fuel ratios.

4. Clogged Fuel Filter: Limits fuel flow, affecting power.

5. Faulty Fuel Pump: Prevents proper fuel supply to the engine.

6. Transmission Issues: Problems like a faulty torque converter can impact acceleration.

7. Engine Issues: Low compression or faulty sensors can reduce performance.

Troubleshooting:

• Check warning lights, air/fuel filters, and transmission fluid.
• Scan the engine computer for error codes if needed.

As a mechanic, don’t be shy to tell people your profession, stop belittling yourself Mechanics put lots of efforts, prob...
10/02/2025

As a mechanic, don’t be shy to tell people your profession, stop belittling yourself

Mechanics put lots of efforts, problem solving skills, technical know how and patience in solving car related problems

You need to have some level of intelligence, technical know and attention to details to know how to set engine timings, rebuild engines and transmission

You must have a mastery of understanding, problem solving skills, focus and analytical thinking to interpret DTC codes, wiring diagrams, perform calibrations, programming, tuning, and relearning of car ECUs

Take pride in your work and do it professionally, people who come to you knows you can solve their problems if not, they wouldn’t come to you

Nobody knows it all, ask questions, be open to learning, have growth mindset and embrace new ideas

Don’t let someone who doesn’t even understand the working principle of VVTIs nor the correlation betwixt Crankshaft and Camshaft in an engine to belittle your intelligence because of ordinary 10K

You’re not an Olodo

You’re Smart

You’re Intelligent and

You’re a Problem Solver.

16/11/2024

~Defensive_driving~

defensive driving is a form of training for motor vehicle drivers that goes beyond mastery of the rules of the road and the basic mechanics of driving. Its aim is to reduce the risk of collision by anticipating dangerous situations, despite adverse conditions or the mistakes of others.

Avoid accidents by correcting problems that may become dangerous. Consider these top ten defensive driving tips.

Defensive Driving Tip #1: Eliminate Distractions

Scientists have studied the reasons behind the large number of car accidents that occur every year, and the most common cause is that the driver has been distracted. For this reason, eliminating distractions is #1 among top ten defensive driving tips. Limit the number of distractions that you have in the car, such as eating or talking.

Defensive Driving Tip #2: Focus on the Horizon

Rather than keeping your eyes fixed on the car right in front of you, keep your eyes on the horizon as you watch the traffic ahead of you. You will be able to see any activity that may cause an accident, and it will give you plenty of time to adjust accordingly.

Defensive Driving Tip #3: Stay in One Lane as Much as Possible

Many car accidents happen when a person suddenly changes lanes and gets rear ended. Choose a lane and stay there as long as possible.

Defensive Driving Tip #4: Keep an Eye on Lane Changers

If you aren't the one changing lanes, then you need to keep an eye on those who are. Many drivers try to slip between cars, even if it is too dangerous to do so. Watch all of your mirrors so that you can see anyone who may be approaching you quickly. Slow down to let them pass if necessary.

Defensive Driving Tip #5: Watch Blind Spots

While some people may not zip in and out of traffic, others carelessly move into another lane without checking their blind spots. In order to avoid getting struck by one of these drivers, stay out of the blind spots of the cars around you.

STEERING SYSTEMSA steering system in a vehicle is designed to control the direction of motion by allowing the driver to ...
29/08/2024

STEERING SYSTEMS

A steering system in a vehicle is designed to control the direction of motion by allowing the driver to guide the vehicle along a desired path. There are various types of steering systems, each with its own characteristics and applications. Here are some common types of steering systems:

1. **Rack and Pinion Steering:**
- This is one of the most common types of steering systems used in modern cars.
- It consists of a rack (linear gear) and a pinion (rotating gear) connected to the steering wheel.
- When the driver turns the steering wheel, the pinion rotates and moves the rack, causing the wheels to turn.

2. **Recirculating Ball Steering:**
- Commonly used in larger vehicles like trucks and SUVs.
- It uses a worm gear and recirculating ball mechanism to convert rotary motion into linear motion, steering the wheels.

3. **Power Steering:**
- This is not a specific type of steering system but an enhancement added to improve steering ease.
- Power steering uses hydraulic or electric assistance to reduce the force required by the driver to turn the steering wheel.
- Hydraulic power steering uses a pump driven by the engine to assist in steering.

4. **Electronic Power Steering (EPS):**
- Similar to power steering, but it uses an electric motor instead of hydraulic assistance.
- EPS systems are more energy-efficient and provide better control over steering assistance.

5. **Four-Wheel Steering (4WS):**
- In this system, all four wheels can turn in the same or opposite directions.
- Improves maneuverability and stability, especially at high speeds.

6. **Active Front Steering (AFS):**
- A more advanced system that adjusts the steering response based on various factors such as vehicle speed, driver input, and road conditions.
- Enhances stability and control.

7. **Steer-by-Wire:**
- An emerging technology that eliminates the mechanical connection between the steering wheel and the wheels.
- Instead, it uses electronic signals to control the steering.

8. **Hybrid Steering Systems:**
- Some vehicles combine different steering technologies to optimize performance and efficiency.

The choice of steering system depends on factors like vehicle type, size, intended use, and cost considerations. Advances in technology continue to influence the development of steering systems, with a focus on improving safety, efficiency, and driver comfort.

STEERING SYSTEMSA steering system in a vehicle is designed to control the direction of motion by allowing the driver to ...
29/08/2024

STEERING SYSTEMS

A steering system in a vehicle is designed to control the direction of motion by allowing the driver to guide the vehicle along a desired path. There are various types of steering systems, each with its own characteristics and applications. Here are some common types of steering systems:

1. **Rack and Pinion Steering:**
- This is one of the most common types of steering systems used in modern cars.
- It consists of a rack (linear gear) and a pinion (rotating gear) connected to the steering wheel.
- When the driver turns the steering wheel, the pinion rotates and moves the rack, causing the wheels to turn.

2. **Recirculating Ball Steering:**
- Commonly used in larger vehicles like trucks and SUVs.
- It uses a worm gear and recirculating ball mechanism to convert rotary motion into linear motion, steering the wheels.

3. **Power Steering:**
- This is not a specific type of steering system but an enhancement added to improve steering ease.
- Power steering uses hydraulic or electric assistance to reduce the force required by the driver to turn the steering wheel.
- Hydraulic power steering uses a pump driven by the engine to assist in steering.

4. **Electronic Power Steering (EPS):**
- Similar to power steering, but it uses an electric motor instead of hydraulic assistance.
- EPS systems are more energy-efficient and provide better control over steering assistance.

5. **Four-Wheel Steering (4WS):**
- In this system, all four wheels can turn in the same or opposite directions.
- Improves maneuverability and stability, especially at high speeds.

6. **Active Front Steering (AFS):**
- A more advanced system that adjusts the steering response based on various factors such as vehicle speed, driver input, and road conditions.
- Enhances stability and control.

7. **Steer-by-Wire:**
- An emerging technology that eliminates the mechanical connection between the steering wheel and the wheels.
- Instead, it uses electronic signals to control the steering.

8. **Hybrid Steering Systems:**
- Some vehicles combine different steering technologies to optimize performance and efficiency.

The choice of steering system depends on factors like vehicle type, size, intended use, and cost considerations. Advances in technology continue to influence the development of steering systems, with a focus on improving safety, efficiency, and driver comfort.

Understanding Car Vibrations: Insights from Tires to Driveshafts**Tires** - Uneven tire wear or damage can cause your c...
29/08/2024

Understanding Car Vibrations: Insights from Tires to Driveshafts

**Tires**
- Uneven tire wear or damage can cause your car to vibrate, especially at higher speeds.
- Out-of-balance tires or flat spots can transmit vibrations through the suspension.
- Incorrect tire pressure may also contribute to a bumpy ride.

**Wheels/Suspension**
- Worn wheel bearings, ball joints, or suspension components can lead to excessive movement and vibrations.
- Bent or damaged wheels can result in vibrations, particularly at specific speeds.
- Worn-out shocks and struts won’t properly absorb road vibrations.

**Driveline**
- An imbalanced driveshaft or worn U-joints can create vibrations.
- Damaged CV joints in the axles can allow vibrations to pass through.
- Transmission or differential problems can also be a source of driveline vibrations.

**Engine/Transmission**
- An imbalanced engine or transmission can cause vibrations felt throughout the car.
- Worn motor mounts or transmission mounts can increase vibration transfer to the vehicle's frame.

16/03/2024

WHICH IS BETTER IN EFFICIENCY, MANUAL OR AUTOMATIC TRANSMISSION?

If it is like two decades ago the answer would have been manual transmission straight away but presently technology has improved. With the introduction of CVT transmission, efficiency in automatics has improved.
When it comes to street driving, both are almost at the same level. Also, someone who is not so good with manual transmission can abuse the gear-changing time making the manual transmission use more petrol. But no matter how bad a driver you are, the electronics that control the automatic transmission will change the gear for you whether you are driving in the street or on the highway.
Presently on the highway, a lot of automatic transmissions will return higher mileage compared to their manual counterpart because they have a higher number of forward gears. The highest forward gear that is available in most manual transmissions now is 6 while some automatic vehicles have up to 8 to 10 forward gears. So the higher the forward gear in use the lower the fuel used at an average speed, especially on the highway.
In conclusion, automatic transmission vehicles that were manufactured in the last decade will likely return higher fuel mileage in general, especially those that have more than 6 forward gears than their manual transmission counterparts.

CATALYTIC CONVERTERA catalytic converter is an emissions control device that reduces the pollutants emitted from interna...
15/03/2024

CATALYTIC CONVERTER

A catalytic converter is an emissions control device that reduces the pollutants emitted from internal combustion engines. It works by converting toxic gases and pollutants in the exhaust into less harmful substances before they leave the vehicle's exhaust system and enter the atmosphere.

Here's how a catalytic converter typically works:

1. **Reduction of Nitrogen Oxides (NOx):** In the first stage, the catalytic converter reduces nitrogen oxides (NOx) by using a catalyst, usually consisting of platinum and rhodium. Nitrogen oxides are broken down into nitrogen and oxygen gases.

2. **Oxidation of Carbon Monoxide (CO) and Hydrocarbons (HC):** In the second stage, any remaining carbon monoxide (CO) and unburned hydrocarbons (HC) are oxidized. The platinum and palladium catalysts facilitate the reaction between these pollutants and oxygen in the exhaust, converting them into carbon dioxide (CO2) and water v***r.

The core components of a catalytic converter are:

- **Catalyst:** Usually made of precious metals such as platinum, palladium, and rhodium. These metals facilitate the chemical reactions necessary for pollutant conversion.

- **Substrate:** A honeycomb-like structure made of ceramic or metal, coated with the catalyst. The substrate provides a large surface area for the exhaust gases to come into contact with the catalyst.

- **Shell:** The outer casing that protects the catalyst and substrate from physical damage and extreme temperatures.

Catalytic converters play a crucial role in reducing vehicle emissions and improving air quality. However, they can become less effective over time due to contamination or damage to the catalyst, which may lead to increased emissions and decreased engine performance. Regular maintenance and inspection are essential to ensure the catalytic converter functions properly.

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BRAKE BLEEDING METHODS AND PROCEDURESBrake bleeding is a critical maintenance procedure for ensuring the proper function...
14/03/2024

BRAKE BLEEDING METHODS AND PROCEDURES

Brake bleeding is a critical maintenance procedure for ensuring the proper functioning of a vehicle's braking system. It involves removing air bubbles from the brake fluid to maintain hydraulic pressure, which is essential for efficient braking. Here are some common methods and procedures for brake bleeding:

1. **Traditional Two-Person Method**:
- This method requires two people: one to operate the brake pedal and another to open and close the bleeder valve.
- Start with the brake furthest from the master cylinder (usually the rear passenger side), then move to the rear driver side, front passenger side, and finally front driver side.
- The person operating the brake pedal should pump it several times and hold it down while the other person opens the bleeder valve.
- Air and fluid will be expelled. Close the valve before the pedal reaches the floor. Repeat until no air bubbles are visible in the expelled fluid.

2. **One-Person Bleeding Kit**:
- This method allows a single person to bleed the brakes using a specialized kit with a hand pump and reservoir.
- Attach the kit to the bleeder valve and follow the instructions provided with the kit.
- Typically, the process involves pumping the brake pedal while opening the bleeder valve to expel air and old fluid.

3. **Gravity Bleeding**:
- This method is slower but can be effective when no assistance is available.
- Start by ensuring the master cylinder reservoir is filled with brake fluid.
- Open the bleeder valve at the caliper or wheel cylinder and let gravity force the brake fluid out.
- Monitor the reservoir and keep it topped up to prevent air from entering the system.
- Once clear fluid flows steadily without air bubbles, close the bleeder valve.

4. **Pressure Bleeding**:
- Pressure bleeding is efficient and commonly used in professional settings.
- A pressure bleeder is attached to the master cylinder, and pressure is applied to force fluid through the system, expelling air.
- Follow the manufacturer's instructions for the pressure bleeder and ensure the correct pressure is applied.

5. **Vacuum Bleeding**:
- Vacuum bleeding utilizes a vacuum pump to draw air and fluid out of the brake system.
- Attach the vacuum pump to the bleeder valve and create a vacuum.
- Open the bleeder valve and watch as the pump removes air and fluid from the system.
- Close the valve when no more air bubbles are visible.

Regardless of the method used, it's essential to:
- Always use fresh, clean brake fluid recommended by the vehicle manufacturer.
- Monitor the master cylinder reservoir level during bleeding to prevent it from running dry, which can introduce air into the system.
- Follow the specific bleeding sequence recommended for your vehicle.
- Tighten bleeder valves securely after bleeding to prevent leaks.

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