2001 lincoln town car: hesitation, low power, rough idle

Get it rescanned for codes. If it is running that poorly there should be trouble code(s). What brand of coil did you install. What brand of sparkplugs? How many miles are on it? Does it have good oil pressure? Have you measured the fuel pressure? Could it be a vacuum leak at the number 6 intake port that you are hearing? Best thing is probably have a mechanic look at it cause throwing parts at it is expensive.

Not positive about the coil, I know it was a $40 cheaper one that is not the same color as the O e m. Is this a possible culprit? And how would I know without having to replace the whole thing? I believe the spark plugs were motorcraft but I honestly am unsure as well. I will investigate tonight and double check to make sure. There is no oil pressure or fuel pressure gauge. Or RPM for that matter. There are only lights that turn on when something's wrong.The oil pressure light does come on now quite frequently as the car is warming up even with sufficient amount of fluid. It used to only do this when it was cold but now it does it often. Not sure exactly what or where the intake vacuum line is but I'll check around the area where cylinder 6 is and find out. I can't seem to find a decent diagram of the vacuum lines anywhere online. And the manual shows nothing. Should I invest in book for this car? I guess in the end you're right, I'm going to take it to a mechanic promptly. I was hoping to avoid that as there are few mechanics around here that aren't an expensive chain, but at this point... .