Addressing engine hesitation or stalling issues in your Mazda CX-5 can be a bit challenging, but by following a systematic approach, you can potentially identify and resolve the problem. Here’s how you can address these issues:

Check for Error Codes

• Use an OBD-II scanner to read any diagnostic trouble codes that the vehicle's computer might have logged. These codes can provide a good starting point for identifying the underlying issue.
• Make a note of any error codes you find and refer to your vehicle’s manual or online resources to understand what they mean.

Inspect Spark Plugs and Ignition System

• Check the condition of the spark plugs. Worn or fouled spark plugs can cause engine hesitation and stalling. Replace them if necessary.
• Inspect the ignition coils and wires for any signs of damage or wear. Faulty ignition components can lead to misfires and engine hesitation.

Examine the Fuel System

• Ensure that the fuel filter is not clogged, as this can restrict fuel flow and cause the engine to hesitate or stall.
• Check the fuel pump for proper operation. A failing fuel pump can lead to inadequate fuel pressure, causing hesitation and stalling.

Look at the Air Intake System

• Examine the air filter and replace it if it is dirty or clogged, as this can restrict airflow to the engine.
• Check the mass air flow (MAF) sensor to ensure it is clean and functioning correctly. A faulty MAF sensor can cause incorrect air-fuel mixture readings.

Investigate the Throttle Body

• Inspect the throttle body for carbon buildup, which can impede air flow and lead to hesitation or stalling. Clean it if necessary.
• Check if the throttle position sensor is functioning properly, as a malfunctioning sensor can send incorrect information to the engine control unit (ECU).

Assess the Engine Control Unit (ECU)

• Ensure the ECU software is up to date. Manufacturers occasionally release software updates that can resolve performance issues.
• If the ECU has logged any error codes, consider consulting a professional mechanic to evaluate and address these specific issues.

Check the EGR System

• Inspect the Exhaust Gas Recirculation (EGR) valve for proper operation. A sticking EGR valve can cause stalling and hesitation.
• Clean the EGR passages if there is a buildup of carbon or soot.

Consult a Professional

• If after performing the above steps the issue still persists, it may be time to consult a professional mechanic who specializes in Mazda vehicles to provide a more thorough diagnosis.
• A professional inspection can uncover complex issues that may not be apparent during a general inspection.

By taking a methodical approach and carefully inspecting each of these areas, you can often identify and address the cause of engine hesitation or stalling in your Mazda CX-5.