2003 Olds Silhouette, 180,000 miles, 3.4L.
My wife had a high RPM incident a couple weeks ago. She has a second car and hasn’t driven the Olds much since then. She took her foot aff he accelerator but the RPMs remained high. She was able to control the car well enough to get home and stop it in the driveway. Inches away from the garage door, of course. I checked range of motion of the pedal before starting the engine and it seemed to be fine. I started the engine and it behaved normally. The Silhouette has a throttle cable and it seemed to move well, though I did not inspect it. I drove around the neighborhood and it still was fine. Since then, we haven’t driven it. I want to figure out a plan of attack to troubleshoot the issue. The main problem I see is that it is intermittent and I might not be able to find any issues. I don’t want her to drive it, and in a month we are expecting a new baby! Well, grandbaby. I don’t want her driving the newbie around either in the van until we fix it. I’d appreciate your thoughts.