Can a bad leak detection pump be replaced?
If the cause is a bad evaporative leak detection pump, the bad one can be removed from your car, and then replaced with a new evaporative leak detection pump. Based on the condition of the entire Evaporative Emissions Control System, your mechanic may also recommend replacing some of those components as well.
How does an evaporative leak detection pump work?
The evaporative leak detection pump is used to build pressure in the evaporative control (EVAP) system each time the self-diagnostic leak check is performed by the engine control computer. Symptoms of a Bad or Failing Evaporative Leak Detection Pump. Evaporative Leak Detection Pump Related Repair Advice.
How is the service port used in a leak detection pump?
Service Port: Used with special tools like the Miller Evaporative Emissions Leak Detector (EELD) to test for leaks in the system. EVAP Purge Solenoid: The PCM uses the EVAP purge solenoid to control purging of excess fuel vapors stored in the EVAP canister. It remains closed during leak testing to prevent loss of pressure.
Can a bad leak detection pump cause a smog test?
A bad evaporative leak detection pump can cause your vehicle to fail a smog test. Many factors can cause a bad evaporative leak detection pump, but there is a single warning sign of a bad evaporative leak detection pump: Your Check Engine Light illuminates.
Where to buy fuel vapor leak detection pump for Jeep Grand Cherokee?
If you prefer to shop in person for the right Fuel Vapor Leak Detection Pump products for your Grand Cherokee, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time! Use the fitment form at the top of the page to select your exact year and engine type for your Jeep Grand Cherokee.
If the cause is a bad evaporative leak detection pump, the bad one can be removed from your car, and then replaced with a new evaporative leak detection pump. Based on the condition of the entire Evaporative Emissions Control System, your mechanic may also recommend replacing some of those components as well.
How does the evaporative leak detection system work?
A key part of the Evaporative Emissions Control System is the evaporative leak detection pump. By pressurizing the fuel system, the evaporative leak detection pump allows the engine computer to detect any leaks which may be permitting gas vapors to escape.
A bad evaporative leak detection pump can cause your vehicle to fail a smog test. Many factors can cause a bad evaporative leak detection pump, but there is a single warning sign of a bad evaporative leak detection pump: Your Check Engine Light illuminates.
How does the leak detection pump ( LDP ) work?
It also performs self-diagnostics. During self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it.
Where is the evaporative leak detection pump located?
The evaporative leak detection pump itself is often located in a difficult-to-access location and may require the removal of some or all of the car’s exhaust system.