1991 Ford Econoline
Problem for Ford 1991 Econoline

Hobgoo44 High Idle




By hobgoo44 on Dec 20, 2008

" "
Ford E250 ClubWagon 5.6 EFI random high idle-won't kick down

Solution #1

posted on Jan 04, 2009
Not Rated)

Ford Tech

Rank: Guru 
Rating: 91%, 61 votes
Could be Idle control valve sticking, vacuam hose leaking or upper intake plenum gasket failure, if you've already checked to make sure thottle plates are closing. Next time it happens, try tapping on the IAC with a small hammer and see if the idle drops to normal.
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