my idle fluctuates after car warms up, from 1000rpm to 2000 when the car is on park or neutral. Sometimes it would fluctuate at 2000 then to 1900 and back The check engine light came on and OBD code p0505 came up. Then I cleaned out the riacv, but it still does the same exact thing. Im not sure what else to do or even check to see if I have a faulty riacv....what should I do?..what could it be?...How can I check if it is faulty?..thanks
Feb 14, 2009 at 3:11 PM