Shudders when driving. on 2000 Honda Civic

My Civic shudders intermittantly when driving on a smooth level road. It does not do it when shifting( it ts an automatic) or under power. When I let off the gas it stop shuddering. My local mechanic says it could be transmission. I tuned it up( plug, wires, distributor cap, etc. but that didn't help anything but gas mileage. What could this be?

by in Dover, PA on September 03, 2009
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers 1 comment
ANSWER by , September 03, 2009
I would check your INNER CV joints. They often make rumbling/vibration when under power. Good Luck!
COMMENT by , June 17, 2010
Mine does the same exact thing. I have an automatic, whenever I drive and let off the gas it will shake at a certain point. I still have to get it fixed, but I was planning on getting it switched from auto->manual when I get back from my deployment here. I was wondering will that clear the problem up? I am not getting it switched for that one reason but I would like it to be manual.
ANSWER by , September 08, 2010
check front axles