Hi All:
95 Seville STS N* My car just started with a crazy idling problem, I had just added a bottle of injector cleaner and right after I did this (next day) the idle on my car will go from about 800 or so up to 2 grand, then be fine... then up again, it's all over the place!................Any ideas??
Thanks in advance
Scott

 

Surging idle is usually a bad IAC, Idle Air Control. It is on the front of the Throttle Body, one electrical connector and two screws. Be careful with the screws, phillips heads if I recall, won't hurt to use some penetrating oil.