Tuesday, October 13th, 2009 AT 10:41 AM
The check engine lt. Is on, code 507. The idle speed goes up to aroun 2000rpm on start up for around 20 seconds, then drops to around 1200. If I accellerate at all, it goes back up and repeats the same thing over. The idle speed stays up between shifting as well. I know there are a number of sensort that can cause this code, any suggestions where to start?