I just had the same problem.
I'm just posting to say thanks to everyone who contributes to this site. Because of this, I was able to quickly determine what was wrong, and even though I didn't do the work myself, I had the part in-hand when I went to the mechanic and got the work done fast.
I'm also happy to have found a great source for discounted OEM parts thanks to this forum.
It's just nice to have such a great support group.
You guys rock!