My '03 was acting strange when starting out in first gear, the rpm's would be all over the place and then when I was stopped, the car would stall out after a minute or so. It seemed to be a similar problem that I had with my MX-3, which had a crack in the intake hose. It turned out that the same hose was cracked on the P5. Since the MX-3 was around 15 years old when its hose cracked, I didn't think much of it, but the P5 is only 5-6 years old. Is this a common problem with mazdas?