today my car I get in just to go to the gas station and I decide to punch the gas and it studders whats the deal??? I havent drove it in 2 days and today its like 38 outside dose any of this matter any ideas???? thanks

 

This is just my opinion, but...mine has done the shuddering thing once or twice. As far as I can tell it's opti related. I'm thinking the opti, even vented ones, can be susceptible to condensation inside. The reason I suspect this is the condition seems to occur only briefly, & disappears when the car runs a few minutes (presumably as fresh air is drawn thru the opti, clearing the condensation out). It seems to occur on days when the himidity is high and or when the eng is cold compared to ambient air temps.

 

that makes alot of sence to me thanks for the info