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Well, first I would suggest seeing if there are any codes in CC/ISC (I am presuming that you don't have EA) (electronic accelerator, cruise control, idle speed control).
With a scanner I would like to see how far the throttle is opening and I sure would be sure of those linkages. The throttle assy goes to a fixed openning under some "limp home" conditions (limp home is a term for the default "basic" condition the system is designed to use when it can't trust itself).
I am pretty sure that the codes can be gotten by the impulse method, seems like pin 14 but thats from memory, definitely verify.
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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