Occasionally while just driving the car will buck a little bit. It feels like its missing but I could be wrong. Under acceleration and deceleration it doesn't do it.

Car had Denso Iridium plugs put in a few thousand miles ago, thats all I know since I just bought it.

any ideas/suggestions?

Thanks
SimpleMan

 

What gear? High compression + short gearing means that the car will buck while cruising in first and second.

 

oh no it can happen in 3rd and 4th too. I know what your trying to say.

 

I know, it is just much more pronounced in 1st and 2nd. For an example, turn on cruise control at 30mph in 1st

 

anyone

 

For starters, missing occurs under acceleration too, so it's not that. What Gear/Speed/RPM? If you want better guesses, supply more information.

Also are you getting a CEL? True missing could through a code. Though this could be anything from lugging to bad gas.

 

bad map sensor maybe?

 

Check this out. Maybe it will help. Im having the same problem as well as a few others in this thread.

https://www.s2ki.com/forums/index.php?showtopic=478799

 

Problem is getting worse the GF said. No engine codes and its just during cruising

 

That's not enough info... What speed/RPM/Gear??? Does it get better or worse with higher speed? What's the milage? Have you every had the fuel filter changed? Do you feel the symptom in the seat or the steering wheel?