Help diagnose my high/pulsing idle
I will start by saying I have searched the forum many times and only find links to esprit high idle, or new people worried about the normal rough idle.
Now the problem. At start up the car idles normally, but when I begin to drive any time I push in the clutch rpms go up to 2000 then pulse between 1500 and 2000. It seems to do this for varying lengths of time but will eventually return to normal.
It seems similar but more severe to a vacuum leak, but why would it return to normal eventually if there were a leak. This is in an 06 Elise with what looks like most of a Haas turbo kit.
Any help would be great.