Where is the EGR valve on a 1992 Chevy lumina 31 v6 and will cleaning it out stop car from lurching or jerking around while accelerating?

The EGR valve on a 1992 Chevy Lumina 3.1L V6 is located on the intake manifold. It's usually a small, rectangular or cylindrical device with a vacuum line connected to it. You'll likely find it near the back of the intake manifold, but its exact position can vary slightly depending on the specific engine configuration. Consulting a repair manual or using online images of the engine bay for your specific year and model Lumina would be very helpful in pinpointing its location.

Will cleaning it fix the lurching/jerking? Maybe, but not necessarily.

While a clogged EGR valve *can* contribute to rough running, hesitation, and potentially jerking during acceleration, it's not the only possible cause. Many other factors can lead to a Lumina's lurching or jerking:

* Spark plugs and wires: Worn or faulty spark plugs and ignition wires can cause misfires, leading to rough running and jerking.

* Ignition coil: A failing ignition coil can also cause misfires.

* Fuel injectors: Clogged or faulty fuel injectors can lead to inconsistent fuel delivery.

* Mass airflow sensor (MAF): A dirty or malfunctioning MAF sensor provides inaccurate air flow readings to the engine's computer, leading to poor performance.

* Throttle body: A dirty throttle body can restrict airflow and cause rough running.

* Transmission problems: If the jerking is particularly noticeable during shifts, the transmission itself may have issues.

* Vacuum leaks: Leaks in the vacuum system can disrupt engine operation.

Therefore, while cleaning the EGR valve is a relatively simple and inexpensive first step in troubleshooting, it's crucial to consider other possibilities if the problem persists after cleaning. A thorough diagnostic check, perhaps involving a scan tool to read engine codes, would be a more comprehensive approach to identifying the root cause of the lurching/jerking.