Hello i have a 2005 lincoln ls v6 . The first problems i had were the coils. I changed all 6 coils and spark plugs after i did all that i drove it for a little bit and saw when i came to a stop and i would go it would be very sluggish when accelerating. Another thing I found was when going up a hill the engine would seem to have trouble and be sluggish also when i would go past 60mph. I drove the car for about 100 miles and then a error code came up for right side catalytic converter. I took it to a guy and he sad that the injectors need to be cleaned but i have already ran sea foam. Maybe change the fuel filter? Has anyone had this problem?