At what speed is this happening? You said you been experiencing this forever, so how long exactly? It could be engine related or trans related. But being that you seem use to it, I would think its probably normal. Maybe with the hills its the tranny deciding to shift or maybe not shifting. Its gonna be real hard for us diagnose it without more specifics.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 Subaru Impreza WRX Wagon
2004 MDX Touring - Midnight Blue Pearl