EGR Valves

Several components fail on the 4 cylinder. If the EGR functionally works when vacuum is applied it should make the engine want to stall. The solenoid that controls vacuum to the EGR can fail intermittently. The vacuum modulator also can fail have replaced them as well but the system needs to be checked properly before jumping to conclusions. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info or there is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subscription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual try http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription. Alldata is also a very good source of information.