190D 2.5 (201.126) L5-2.5L DSL (602.911) (1987)
Throttle Full Open Switch: Testing and Inspection
Fuel Systems
Non Turbo
1.
Connect vacuum gauge with "Y" fitting to EGR valve. Start engine, increase engine speed to 1200 RPM and actuate microswitch.
2.
Vacuum reading on gauge should should drop to 0 in. Hg. Vacuum control flap should move into a deactivated position.
3.
If test results are not as outlined above, test individual components.
Turbo
1.
Connect vacuum gauge with "Y" fitting to EGR valve. Start engine, increase engine speed to 1200 RPM and actuate microswitch.
2.
Vacuum reading on gauge should should drop to 0 in. Hg. Vacuum control flap should move into a deactivated position.
3.
If test results are not as outlined above, test individual components.