Hey guys, after all the help I received in conquering my mystery code problem I am on to tackle other things on the car. The next problem I am having is the engine (at idle) seems to vibrate so bad it will shake the entire car. If you watch the tach it doesnt move around much but the engine just shakes badly. I have checked motor mounts and they seem to be fine, its almost like its missing or something ? I have done what I deem a full tune up..plugs, wires, cap, rotor, fuel filter, sea foamed the intake & throttle body yet it wont smooth out. I am kinda stuck on where else to look....its literally like its running on 3 cyl or something.

 

I'd love to find out the answer also. My car does this at Start up in Park and then with my foot on break. But JUST at startup. Once I'm in drive, all is good. I have Auto Transmission 2000 DX Model.

 

while running have you pulled your spark plug cables to see if it stays the same or gets worse?
you might have a very small hole on the side of one of the boots and it would be grounding out.
but getting through on higher rpm's

as far and dino's I couldnt tell you, thats strange.

 

I tried this when I thought there was a miss in the plugs somewhere and the idlealways got worse. Its odd when you apply the gas or come barely off idle the shaking stops, but at stoplights when in drive it always happens....weird.

 

check your egr system - valve could be stuck open