Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Surging idle upon startup
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Old 02-28-2013, 01:59 AM   #4
my_beautious_ZX3
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^yeah, unless it is momentarily stuck open and takes a few moments to un-stick itself. If it happens every time you do a cold start, unplug the IAC electrical connector and try starting it.

Else, how high do the rpm's surge? Is it dumping fuel - what does the exhaust look/smell like during the surge?
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