Damn, what now............

[Erich Zeppelin]

Hi guy's, My 1999 Expedition is having a fit. Fired her up yesterday and after a few miles she started to jerk and stumble, then smoothed out and ran fine. On the way back home, same thing. Today I noticed that she runs really smooth until I try to accelerate, the she bucks and jerks for a bit, then smoothes out. No SES light, tach and speedometer stay steady......

 

[stamp11127]

First thing I would check is the tps, then check for vacuum leaks.

 

[Erich Zeppelin]

Thank's, it was a fouled plug.........