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Registered
Join Date: Sep 2005
Location: Northern Virginia
Posts: 1,794
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I had this high idle issue with my '83 cabriolet and, as John Walker suggested, it was my own doing. When I pulled the engine for a top-end rebuild and resealing, I went through all the CIS components for cleaning and checking.
I know I reset the throttle body stop when I disassembled and cleaned the throttle body because that 99.9 percent closure "looked" awfully tight (but there were no signs of wear).
After re-assembling everything and tuning the engine in, I found that I couldn't get my engine idle below 1,000. This had me scratching my head and looking for air leaks, etc.
Finally, I re-adjusted the throttle body plate stop (just above the point where the plate binds in the throttle bore) and this corrected things.
Brian
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'82 SC Targa
'83 SC Cabriolet
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