Hello All
First post here and need some help. The GT has 97K miles and runs really well. The problem is cold idle. When first started, idle settles around 1500 but goes up when driven. This is a MT car. Driving a short distance and then stopping at an intersection produces an idle around 2500. This will continue until engine gets a little heat in it. Until then, when the clutch is in, it will rev back up to the 2500 range. When warm, not even fully, the idle will begin acting "normal". Occasionally, it will be very slow in dropping down to the 700 idle range. I have replaced the plugs and wires and cleaned the throttle body. Could this be coolant temp sensor related or IACV? Where is the IACV and how is this checked and cleaned? Location of temp sensor? Any other thought? I have read about the IACV for 2.2 engines but haven't found 2.5 yet. Any help would be appreciated!