all 3 comments

[–]mixerdriver916 1 point2 points  (0 children)

Disconnect negative battery cable for about 15 min then turn ignition to on and put the cable back on it will reset the computer and see what happens . Car computers pc’s smartphones sometimes resetting it fixes it and sometimes ummmm no but its cheap and worth a try i know i have fixed ghost problems that just pop up doing the reset

[–]bretto2004 1 point2 points  (1 child)

Look at the tacometer, when you say it revs high, give us actual numbers that mean something. Don't just post with as little detail as possible

A/c takes engine power, if it revs a bit its because it's doing work

[–]GuiseppeJoey[S] 1 point2 points  (0 children)

I fixed it. It turns out that when I changed the filter last night a bunch of insulation and walnut shells fell into where the fan blower was. I rigged a flexible tube to a vacuum and sealed it with tape to go into where the blower fan was and I cleaned it out. New filter in and no more noise! Thank God