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Engine Tech / Idle Surge - 1984 5.0 Thunderbird, CFI, EEC-III, Duraspark III
I came across this thread while searching the web for symptoms and solutions for my temperamental CFI 302 equipped Mercury Colony Park. The vacuum diaphragm in my fast idle was shot and I can't find where to buy a replacement diaphragm. Where did you get yours? Any help from other forum members would also be appreciated.