rclafo ... 1/18/2013
2005 Ford Escape Limited 6 Cyl 3.0L
i had new spark plugs installed. A short time later, i began to feel a rough idle or vibration inside the cabin. 87ks
I don't recall if I had egr replaced. The car has never done this until after the plugs were installed.
Check the spark plug boot - maybe one has become loose or disconected at the spark plug. If these are OK and installed correctly at the spark plug - then check the coil-on-plug wiring and connections. The condition and spark plug coil-on-plugs (COP) are usually checked / replaced at the time of the tune-up.