hello all,
i have a 1.6 16v zetec escort (has the later black plastic manifold). from cold its starts fine however, revs hold at 2000rpm for approx 10secs then drop down to normal idle, if the throttle is very lightly blipped it will hold again 2000rpm for 10secs even if you havn't pressed the pedal that hard it will hold there, this also happens when stopping at junctions, traffic lights it will hold at 2000rpm then drop back down the normal idle. ive checked all vacuum pipes they all seem ok no splits and are all connected, ive also cleaned out idle control valve this hasnt made any difference.
any help would be much appreciated, thanks
Chris
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