Genuine Pontiac Firebird EGR Valve

Pontiac Firebird EGR Valve Parts Questions & Answers

• Valve Assembly, Egr
  17110799
  Q: What is the purpose and function of the EGR Vacuum Solenoid and EGR Valve on Pontiac Firebird?

  A: The Exhaust Gas Recirculation (EGR) system reduces NOx emissions by reintroducing exhaust gas into the combustion chamber via the EGR valve on the intake manifold. This valve, opened by manifold vacuum, operates primarily during warm engine conditions above idle. The system adjusts gas flow based on manifold vacuum and exhaust backpressure, using a negative backpressure valve. An ECM-controlled solenoid refines EGR flow, receiving input from various sensors. Excessive EGR can cause stalling or surging, while insufficient flow might lead to engine overheating or emission issues. To maintain the system, inspect hoses and connections, ensure EGR valve operation, and check the solenoid. Replace faulty parts and clean the valve and passages when needed.
• Valve Assembly, Fuel Upper Cnst Control
  17085929
  Q: What is the location of the EGR valve on Pontiac Firebird?

  A: The EGR valve in GM vehicles is found on the intake manifold, near the Carburetor or TBI unit. Often, issues in this emissions system are due to a stuck or corroded EGR valve. To check, with a cold engine to avoid burns, manually push the diaphragm under the EGR valve. If it doesn't move easily, replace the valve. If unsure, compare the movement of your valve with a new one.