The common problem for ignition misfires are ignition coils going bad. Replacement of the bad ignition coil is necessary. These should be fixed as soon as a problem is detected. Otherwise the misfire can cause damage to other components.
Car Problem Reports
Ford Escape Ignition Misfires
Ford Escape Problem
Engine Affected: 3.0L V6
Average Mileage: 119,272 mi (55,000 mi - 200,000 mi)
Starting at 60,000 miles I have had a misfire code for one of the coils on plug (V6) every 20,000 miles or so. At 75,000 miles I had another one that I drove too much before repairing and it plugged up the Catalytic Converter - you'll know because the car will be slow on acceleration and very poor on fuel economy - 80,000 mile warranty, but the dealer will fight you on it since the exhaust manifold integrates three catalytic converters and the job runs the risk of fouling the muffler also.
I have replaced 5/6 coils and all spark plugs twice. This last time I did the job myself and did not go OEM on the COP - wait and see. It has been a $600 dollar job at the shop - if the coil is in the front - DIY - If in the back - consider paying the mechanic as it is more time consuming and really requires a haynes or chilton manual to do it right.
Visitor, 2003 Ford Escape, 80,000 mi
I have replaced 2 of the 6 and now another one has gone bad.
Visitor, 2001 Ford Escape, 108,000 mi
2 coils were misfiring and 3 coils were cracked.
Ignition coils have been a continued source or aggravation on this vehicle, so far have replaced 3 of 6. Fortunately 2 have been on front of engine easily accessible, 3rd required removal of intake manifold (not complicated, but time consuming).
Visitor, 2002 Ford Escape, 3.0L V6
Have had to have several coils replaced, and now another has gone bad.
Visitor, 2005 Ford Escape, 3.0L V6, 100,000 mi
My check engine light went on. My son in law used a diagnostic meter and came up with 3 ignition coils are misfiring. Although he said the front ones weren't hard to change, I should have all 6 of them changed at the same time. The price difference for the parts ranges from 6 for $25 to $60 each plus he said it should take no more than 1.5 hours of labor. At least I'm going in to the mechanic shop with some info. Getting an estimate first. Sounds like a $600 + job. I miss my hubby (marine Vietnam great mechanic). I haven't had to pay for anything but parts while he was alive. A good honest mechanic is worth his weight in gold.
I just had three coils replaced for a total of $420.00 (knew the mechanic). My truck still sounds very loud, but is running much smoother.
Visitor, 2001 Ford Escape, 55,000 mi
Have replaced 2 coils so far...very annoying and expensive to do each