My 02 has this annoying issue. Whenever I'm driving at a constant speed the engine has this slight jerking effect. Not bad like a misfire and if I accelerate slightly it will stop. Gas mileage is fine and power is good too. Oh and I don't have a cel.

 

up [sm=shootshoot.gif]

 

TPS or vehicle speed sensor - from my past experience with a similar problem. Is it morenoticable when in cruise control?

 

Actually it makes no difference cruise on or off. But it does it more when the engine is cold.

 

The only reason I mentioned cruise is because that tends to be more steady state and so you may notice it more. As well the cruise will read off the vehicle speed sensor. I'll still go with TPS or VSS, but the fact that it makes no difference in cruise leans me to TPS. You may get ok ohm readings from TPS and it still could be bad, at least mine was. This is one you may have to take in fortroubleshooting as I don't think the TPS is cheap and I don't want you coming back to me and say TPS ok but it cost me $xxx. You could also try re-adjusting the TPS position. I think you needan ohmmeter for that as well.

 

yes i think tps or vss ? check them, you have no codes??