I love your videos, I watch them everyday. I have one question and one issue to ask for your expertise help. What is the purpose of the Over Drive button on the shift handle on a 2006 Highlander Ltd? Should I leave it ON at all times? Or engaged it when I reach speed at 50 MPH?
The other issue I am having is, recently I cleaned the Throttle Body, MAF sensor; changed air filter on my 2005 Sienna with about 125k miles. Before the cleaning of the Throttle Body - the RPM idle was at about 550-600 RPM. I didn't feel any shaking of the engine on the steering wheel at all. After I cleaned the TB, the RPM went back to 700-800. It lasted for about a week or so. Now it occasionally fluctuate between 600 - 750 rpm. What can be the cause?
Thank you for your advice.