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idle issue and noise when in drive

03-02-2010, 07:03 PM
hi all ... just got a 1994 e250 4.9l .. runs great but idles high and fluctuates, from what i have been reading maybe a vacuum leak??? the other issue is when in drive it sounds like a minor exhaust leak. almost like a manifold, but when not in gear very smooth no leak... seems strange..

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