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What is a leak detection pump?

Joe Ford

What is a leak detection pump?

The leak detection pump is the component that often triggers those “Check Engine” warning lights when it detects small leaks that would be hard to see. It is required under federal law as it ensures your evaporative emission system (EVAP) is functioning correctly.

How do I complete a drive cycle?

In most cases, a correct drive cycle will take no longer than 15 minutes to complete.

  1. Step 1: Finish Repairs and Clear all Fault Codes.
  2. Step 2: Preparing the Vehicle.
  3. Step 3: Complete the Cold Start.
  4. Step 4: Start the road test.
  5. Step 5: Complete the Final Scan for Error Codes.

What is a drive cycle for emissions?

A drive cycle is one of the methods used by a vehicle’s powertrain control module (PCM) to determine whether an emissions system repair was performed successfully. It involves a special test drive that duplicates the scenario of a person starting the car and making a short freeway trip, as if driving to work.

How many miles do you need to pass emissions?

100-200 miles

Does a drive cycle have to be continuous?

Continuous monitors are different in design from the non-continuous ones. Some monitors require that the car follows a predefined drive cycle routine. Some require two drive cycles because of the need for a cool down and warm up periods between. Each emission monitor can have different requirements for the conditions.

How do I clear diagnostic codes?

here’s how to clear that pesky check engine light with a scanner:

  1. Grab the scanner and connect the interface cable or device to the OBD2 port in your vehicle.
  2. Turn the ignition to ON.
  3. Press the READ button in the scan tool.
  4. Press the ERASE button on the scanner to clear the trouble code.

What does N a mean on a code reader?

N/A on most OBD-II trouble code readers indicate the monitor is not applicable to the vehicle being tested.

What is a pending code?

Pending codes are caused by intermittent faults or faults that the PCM needs to see happen in two consecutive warm-up cycles to set the code. If the fault does not reappear within 40 warm-up cycles, the code will be cleared from memory.