Monday, May 12th, 2008 AT 7:32 AM
When I am driving my car the speedometer will all of a sudden bounce up and down erattically and it will downshift from overdrive. I have not seen a mechanic yet but am planning on it soon. Should I take it to a transmission guy or a regular mechanic? It doesn't happen all the time but often enough. The transmisiion will jerk suddenly too. Any ideas? Thank you!