Check this out it details how to solve your adjustment of the ICV.
Idle Speed Air/Control/Slide Valve Confidence Check
Look at post 11 & 12.
Post 18 says how to make the adjustment.
The ICV does not affect the mixture and it is always regulating the idle speed contrary to what lkchris says.
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I got too many cars!! Insurance eats me alive. Dave
78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k
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