are summarized below: Codes from the DIAGNOSTIC Module:

005: EGR faulty
006: Idle speed control faulty
009: Intake Air Sensor faulty
014: no such code
017: Data exchange malfunction
026: Upshift delay faulty
080: no such code

All of these have a common 'thread' to the vacuum system except for the 017. That could be the dreaded harness!

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Regards . . . . JimF
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'94 S500 Cpe

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