Seems like most of you missed the point I was trying to make regarding technology. The OBD reader is suppose to tell you what's wrong with your car. In the 2 instances I referenced it did not. #1. It said bad mass air flow sensor. Tunrns out that was not the problem. #2. Transmission shift solenoid. That was wrong also.
Years ago my wife had a GMC Acadia. There are wheel speed sensors that when the car goes over 5 MPH they send a signal to lock the doors. The plastic cam to auto lock the doors at 5 MPH was cracked. So doors no lock car no go. What actually happens is that the car will go until you stop at a light or stop sign while in drive. When you take your foot off the brake the car will not move. A master mechanic friend and myself trouble shot this thing for literally weeks. He still uses that suv to tinker and train mechanics. That was 4 years ago.
Years ago my wife had a GMC Acadia. There are wheel speed sensors that when the car goes over 5 MPH they send a signal to lock the doors. The plastic cam to auto lock the doors at 5 MPH was cracked. So doors no lock car no go. What actually happens is that the car will go until you stop at a light or stop sign while in drive. When you take your foot off the brake the car will not move. A master mechanic friend and myself trouble shot this thing for literally weeks. He still uses that suv to tinker and train mechanics. That was 4 years ago.