626 L4-2184cc 2.2L SOHC F2 (1989)
2.
Plug the No. 1 port and connect a vacuum pump to the No. 3 port.
3.
Blow into the exhaust gas port. Operate the vacuum pump and verify that vacuum is held.
4.
Release the exhaust gas port and confirm that vacuum is released.
EGR CONTROL VALVE
Checking EGR Valve
1.
Manually actuate the valve by pushing on the diaphragm with finger.
2.
Check that the spring resistance is present and the diaphragm moves freely with no sticking or binding.
NOTE: Before replacing the EGR control valve, check the intake air and control systems.
3.
Warm up the engine and run it at idle.
Checking EGR System
4.
Connect a vacuum pump to the valve and apply vacuum.
5.
Check that the engine runs roughly or stalls at more than 40-60 mmHg (1.6-2.4 in.Hg).
6.
If not correct, replace the EGR control valve.
