I'm having trouble with my civic 2008, it began with my car trembling in the mornings, and when I let go of the gas, it sounds like it's struggling to advance. Now it trembles all day, and only in the mornings I let go of the gas and sounds worese. Could it be the spark plugs. Please Help..

 

Is it still under warranty? If so, take it to the dealer. If not, get some fuel injector cleaner to see that helps. Still have problems, wires and plugs are next and possibly an air filter.

 

not sure, its a 2008 Honda Civic, it has like 44,000 miles. I remember I changed the air filter and put 2 fuel injectors in the gas tank. I thought it could be the spark plugs. Other then that I have no idea what it could be, It does it more in the mornings cause of the cold. It sounds I'm dragging the car and when I let go of the gas, it also makes a struggling noiese.

 

If it acts strangely when you are just rolling along not touching the gas pedal at all, it shouldn't have anything to do with the engine. Try putting the transmission in neutral and see if anything changes.

 

Well the 2008 has 5 year and 60,000 mile drivetrain warranty. It really hard to figure out the problem that you are having. Do feel/hear anything when you are braking? Does the transmission shift smoothly?