Where is the EGR valve on a 5.7 Hemi?
The EGR valve on most 5.7-liter Hemi V8 engines is mounted on the intake manifold toward the back of the engine near the firewall, connected to the exhaust via a small metal tube and controlled by the engine computer. Exact placement can vary slightly by model year and vehicle, so it’s best to verify against your specific car or truck.
Typical location on the 5.7 Hemi
In the common 5.7 Hemi layout, the EGR valve sits on the intake manifold near the rear of the engine, close to the firewall. A metal EGR tube runs from the exhaust manifold to the valve, and an electrical connector or vacuum line attaches to the valve to control flow.
To help you identify it, look for a small valve assembly mounted to the back or side of the intake with a metal tube leading from the exhaust side and a connector or hose attached for control.
- Location: typically on the intake manifold toward the back of the engine, near the firewall (driver-side area for many configurations).
- Connection: a metal EGR tube from the exhaust manifold and either an electrical connector or a vacuum hose feeding the valve.
- Appearance: a compact valve, roughly fist-sized, with ports for the exhaust-to-intake passage and the control line.
With these cues, you can reliably locate the EGR valve on most 5.7 Hemi installations.
Variations by year and model
Common patterns across typical 5.7 Hemi applications
Most 5.7 Hemi engines share a similar layout: the EGR valve is mounted on the intake manifold toward the rear, near the firewall, and connected to the exhaust via a dedicated EGR tube. While the fundamental arrangement remains the same, packaging and minor design changes over the years can shift the exact spot slightly, so it’s wise to check the service manual for your specific model and year.
Notes for newer or specialty models
Some vehicles that use the 5.7 Hemi (for example certain RAM, Charger, Challenger, or Grand Cherokee configurations) may have slight variations in surrounding components, but the EGR valve itself is still anchored to the intake region with a tube from the exhaust path. If in doubt, consult the vehicle’s owner/service manual or a parts diagram for your exact VIN.
How to access and inspect the EGR valve
If you need to inspect or replace the EGR valve, follow these practical steps to locate it and assess its condition without triggering damage or injury:
- Park safely, disconnect the negative battery cable, and allow the engine to cool before starting work.
- Locate the valve by inspecting the back/side of the intake manifold near the firewall; identify the metal EGR tube coming from the exhaust manifold.
- Disconnect the electrical connector (and any vacuum line if present) from the valve, then unbolt the valve to inspect for carbon buildup and proper movement.
- Inspect the EGR passages and tube for blockages or heavy carbon deposits; clean with approved cleaners or replace parts as needed.
Concluding: Regular inspection of the EGR valve and its passages can prevent drivability issues such as rough idling, stalling, or reduced fuel efficiency.
Maintenance tips and replacement guidance
To keep the EGR system functioning well on a 5.7 Hemi, follow these tips when performing maintenance or planning a replacement:
- Use OEM or quality aftermarket EGR valves that match your model year to ensure correct calibration and control.
- After cleaning, test the valve movement (electrically or via vacuum) and confirm the PCM commands proper opening/closing during engine operation.
- Check the EGR tube and related gaskets for leaks or cracks, and replace as needed to maintain a sealed system.
- Consider a full EGR cleaner service if you notice persistent symptoms like smoky exhaust, check engine lights, or reduced performance.
Concluding: Proper maintenance of the EGR valve and its connections helps maintain smooth engine operation and emissions compliance on the 5.7 Hemi.
Summary
On a typical 5.7 Hemi, the EGR valve is located on the intake manifold toward the back near the firewall, connected to the exhaust via a metal EGR tube and controlled by the engine computer. While this arrangement covers most applications, exact placement can vary slightly by year and model, so consult the vehicle’s manual or a detailed parts diagram for your specific car. Regular inspection and cleaning of the valve and its passages can prevent common EGR-related issues and keep your engine running efficiently.
