Starting fault: fluctuating revs

[Febi Guibo]

The problem occurs whether the engine is cold or hot.

Really, what I meant was, ICV effecting the idle during the time just after starting up, vs. running....

anyway, I'm going to check mine this weekend too...

[n2motorsports]

cold .A good cleaning .

please elaborate...what do you recommend cleaning it with?

[sheepdog]

Vacuum leaks.
First thing to check. Unless you have replaced all of the hoses, you have vacuum leaks.

They will effect it at all temps though usually not enough to nearly kill the engine.

[RED IS 91]

please elaborate...what do you recommend cleaning it with?

Take it out and squirt some carb cleaner inside to clean the black crap out if there is any . Then squirt some WD40 for some lubrication . While it's off connect 12 volts to the terminals to see if the valve moves .If it doesn't move then you need a new one . When I did mine I connected two wires from the battery to the  ICV ( I just layed the ICV in the trunk and used two short wires from the battery) to see if the valve inside the ICV moved.
Good Luck