Hello, i'm a first time poster here, but i've been relying on this site's hugely helpful forums for a couple years.
My beloved 93 850 has started to do something that i, for the life of me, have no idea where to start a diagnosis. The engine is reving up by itself all the time, not even intermittently just constantly. If i lightly depress the clutch or the brake it will disengage this behavior, but no matter if it's just been started and idling or if i'm driving at any speed, once i take my foot off clutch (and brake) it revs (or attempts to rev if i'm in gear) to above 3000 RPM.
If i'm on the highway it performs pretty good as a cruise control as it basically keeps the car at 70mph when in 5th gear. In fact, I thought maybe the cruise control had freaked out or something but i pulled the cruise control control module and that had no effect.
I'm totally stumped on what this could be, i saw an s90 thread here at > viewtopic.php?f=2&t=30337&p=137203
but it doesn't seem like a good match to my problem.
Does anyone have any thoughts? Or suggestions on where i might start looking?