I agree, "mechanic"is used to describe alot of people who dont deserve the title.I worked with mechanics all my life,some good some not so good.Today i spent alot of time verifying Pressure and Vacuum lines are connected properly and with the exception of having bypassed the wastegate control transducer and the overload switchover valve things are properly connected.I tested the switch for the switchover valve and determined that it does not complete the circuit until about 20 psi,well above the 1.3atm spec but since the valve was bypassed anyway that didnt matter but will have to be replaced when i get the rest of this straightened out.tomorow i will test the 3 transducers and determine which way i will correct the problem.I am leaning toward just going with a pressure type actuator and eliminate the many possible faults with all these vacuum lines and devices.Simplicity is good!All sugestions and opinions are welcome. TIA Don

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97 E300D 157000 miles
87 300TD ?141k? miles