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20784883 | Genuine Volvo EGR Valve For MP7, MP8, D11, D13

20784883 | Genuine Volvo EGR Valve For MP7, MP8, D11, D13

Original price was: $799.00.Current price is: $159.80.

SKU: 20784883 Category: Tag:

Description

Description: EGR Valve, Exhaust Gas Recirculation Valve For MP7, MP8, D11, D13
Condition: New
Brand: Volvo®
Part Number: 20784883

Vehicle Fitment:

Make Engine Approx. years
Volvo D11 2008–2020
Volvo D13 2008–2020
Mack MP7 2008–2020
Mack MP8 2008–2020

An Exhaust Gas Recirculation (EGR) valve is a part of a car’s engine emissions system. Its job is to send some of the engine’s exhaust gas back into the intake. This lowers combustion temperatures and helps reduce nitrogen oxide (NOx) emissions.

1. Engine burns fuel → produces hot exhaust gases.
2. EGR valve opens → allows a controlled amount of exhaust gas back into the intake.
3. Exhaust mixes with fresh air → this reduces the amount of oxygen available for combustion.
4. Combustion temperature decreases → the engine burns at a lower peak temperature.
5. NOx formation decreases → fewer nitrogen oxide pollutants are produced.
6. Exhaust emissions are reduced → helping the vehicle meet emissions standards.


Signs Of Faulty:

 

  1. Check Engine Light
    • The engine computer detects that the EGR system is not working correctly.
    • Diagnostic trouble codes such as P0400–P0409 may appear.
  1. Rough or Unstable Idle
    • If the EGR valve is stuck open, too much exhaust gas enters the engine at idle.
    • The engine may shake, run unevenly, or feel like it is going to stall.
  1. Engine Hesitation
    • When accelerating, the vehicle may hesitate or respond slowly.
    • You may feel a brief jerking or stumbling sensation.
  1. Loss of Engine Power
    • A restricted or malfunctioning EGR system can cause poor acceleration.
    • The problem may become more noticeable when going uphill or under heavy load.
  1. Engine Stalling
    • A valve stuck open can allow excessive exhaust gas into the intake.
    • This can cause the engine to stall, especially when stopping or idling.
  1. Poor Fuel Economy
    • Incorrect EGR operation can interfere with the engine’s air/fuel management.
    • You may notice that the vehicle uses more fuel than normal.
  1. Hard Starting
    • If the EGR valve is stuck open, starting the engine can become difficult because the intake mixture is disrupted.
  1. Engine Knocking or Pinging
    • If the EGR valve is stuck closed, combustion temperatures can become higher.
    • This can increase the possibility of knocking/pinging, particularly under load.
  1. Increased Exhaust Emissions
    • A malfunctioning EGR system can increase NOx emissions because the combustion temperature is not being controlled properly.

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