Exhaust Gas RECIRCULATION System Check
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the vacuum hose (black) from the exhaust gas recirculation (EGR) valve, and then connect a hand vacuum pump via the Tee-fitting.
- Start the engine. As described in the VACUUM CONDITION REFERENCE tabled, check the vacuum condition when the throttle valve is opened suddenly (revving) during cold and hot engine conditions.
When engine is cold
[Engine coolant temperature: 20°C (68°F) or less]
VACUUM CONDITION REFERENCE (ENGINE COLD)THROTTLE VALVE NORMAL VACUUM CONDITION Open quickly No vacuum (Remained as barometric pressure). When engine is hot
[Engine coolant temperature: 80°C (176°F) or more]
VACUUM CONDITION REFERENCE (ENGINE HOT)THROTTLE VALVE NORMAL VACUUM CONDITION Open quickly Momentarily rises over 13 kPa (3.9 in Hg) - Stop the engine. Remove the Tee-fitting and the hand vacuum pump.
- Connect the hand vacuum pump directly to the EGR valve.
- Start the engine and run at idle until warm.
- The engine idling speed should be rough when a vacuum of 29 kPa (8.7 in. Hg) or more is applied to the EGR valve.
- If engine idles rough, EGR passage is open and the system is OK. If engine idle is not rough, the EGR passage and the valve must be checked for restrictions. Perform the EGR valve check. Then repeat the exhaust gas recirculation system check.