highlander

2-3 injection, when I try to start my car its go,s strait to high rev,s and stops. I can hold it at 1000 rev,s but it misfires and banks. I was wandering if any volvo person out there has any idea what would be the cause of this and how to repair it. I can't afford to go to a garage as I am a low wage earner and I would hate to part with my volvo if its a minor fault.
Thanks and happy motoring