B Ben New member May 10, 2009 #1 It has always run great. Suddenly, the engine has begun to rev up and down on its own while idling.
F formulafire83 New member May 10, 2009 #2 could be your idle air control valve (iacv) or your throttle position sensor (tps), check the vacuum lines going to the iacv and any lines they may be damaged, could also be a vacuum leak, make sure your air intake is properly connected and snug.
could be your idle air control valve (iacv) or your throttle position sensor (tps), check the vacuum lines going to the iacv and any lines they may be damaged, could also be a vacuum leak, make sure your air intake is properly connected and snug.
B bandit_60 New member May 10, 2009 #4 sounds like the idle air control sensor. try cleaning it and put it back on.
