First time I have used FS2004 and the PMDG 737. Only trouble I am having is the plane bouncing continously up and down like it is going through turbulence. Even in clear air with no weather involved. Anybody have this experience and is there a fix?

The PMDG 737 autopilot is very sensitive in climb. Any turbulance in weather will cause pitching and is especially noticable when using any weather theme. Support advice is that this will be addressed on patch 2.

Eric,Make sure you don't have the reverse trim setting ticked in FSUIPC. This seems to cause the PMDG 737 lots of AP problems. Mine used to do this and I un-ticked the settings.See other notes in this forum about the same problem.CheersBob

Do you mean the payware version of FSUIPC? If so, and I don't have it, is there another workaround? This post is timely because I've been dealing with severe 'whiplash' when using the AP and I keep thinking I must be doing something wrong, and I very well could be. But, I'm dead-on the FD (or very close) and when I hand it over, wham! up/down, up/down very severely, not altitude, just the 'head-bobs'. Happens probably 2/3 of the time on my climbs no matter how hard I try to nail the FD (I have V2 set in the MCP and use TO/GA for takeoffs, and even use derated take-offs so I'm not forced to 20 degress + just to maintain V2 + 20! Also, it seems that if I 'cheat' and add 10 to V2 in the MCP that helps). It wouldn't surprise me one bit if it's something I'm doing wrong, so any advice would be appreciated.Thanks.-JOE