Rep Power: 0

I have recently purchased a 2006 Honda Civic with 169k. (Automatic)

Ran like a dream for the first month, now when I’m at a stop the car will idle rough (not through the steering wheel) more from the bottom of the car. If I turn the steering wheel the RPM’s will go from about 600 to about 1000 and the rough idle will go away until the RPM’s drop back down to 600.

I have changed the sparkplugs (hoping it would be a fouled plug) yesterday and the car still does it.

My parents mechanic wants to clean the fuel system…

I’m thinking it might be a bad motor mount, but I shift through the gears manually & there is no “thud” or “slamming” of the engine.

Could it be anything other than that?

 
Rep Power: 518

What looks like around 600(ish) on the tach sounds normal and you cannot adjust it.



The normal motor mount failure doesn't cause a thump on accel in this car.

The (engine, front, by the accessory belt) mount collapses and transmits engine vibration throughout the car, mostly at idle and in reverse.

During forward acceleration the vibration goes away.

Check this post: https://www.civicforums.com/forums/1...ml#post4577741

Doubt it will do anything.

Burn good gas instead: http://www.toptiergas.com/

 
Rep Power: 0

Thank you for that! i will check that out tomorrow.