HELP!!!! my mondeo with the zetec engine has recently started to run at about 1500rpm when ever i pull up at a junction or at the lights, but after about 2-3 minutes it will slowly come back down.I have tried spraying the cable and linkages with copper slip but no difference ,someone told me it will be the idle control valve/air mix valve .This from a person who hasn`t changed his oil in 2 years so i`m not sure if i trust him..PLEASE HELP it`s doing my crust in..
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