UMD GS400

Also, sensor ← You definately sound like you were experiencing the same problem as me. What is the difference between the throttle position sensor and the pedal position sensor? They sound similar to me? Have you had any problems since?

Thanks for the link. Wow, this is an expensive part and it's not even an upgrade.

The dealer said the throttle body was sticking and there was no cleaning or repair maintenance that could be performed. I just don't understand how this could be, but I guess the warning signs were there and I just didn't realize. The car had stalled on rare occasions, but nothing a turn of the key didn't solve. The problem went from minor annoyance to major pocket hit $$. I'll keep you posted if I find any cheaper alternative, but something is telling me that is not going to happen.

Recently my 99 GS 400 stopped accelerating while I was cruising at 65 mph. The check engine light came on as well as the VSC indicator and VSC OFF indicator. After pulling off to the side of the rode in the middle of the night, I turned the car off a couple of times and tried to drive off with no luck. On the third try the trouble lights were still illuminated, however, I was able to accelerate at this point. Upon reaching 2 miles from home, the car failed to accelerate once more and I was reduced to driving 5mph the rest of the way home. The next morning I drove the car to the dealership for service hoping I would not experience the same problems because the indicators were still present. The dealership diagnostic indicated there was trouble initially with the throttle position sensor, then the dealer explained I needed a new throttle body replacement. Total cost to yours truly $1200. Does anyone know why it is not possible to clean the throttle body to reduce the sticking of the butterfly? What else can be done to avoid this $1200 rape?? All input is welcome.