Idling rough. The coils and spark plugs have been replaced but still idles really bad in my 2001 Lincoln LS. The car has 72000 miles

Do a compression test. Maybe that motor needs major repair.

You replace the spark plugs with the factory spec
plugs every 3 years

You replace both upstream O2 sensors every 100,000 miles

The COP ignition coils can last 2 years or 8, but they all fail by then

With no experience & me not writing a book here, on how to diagnose,just replace all the coils

Get them from Rock Auto

The codes you get are not much use as they are not accurate
The coils act up in different ways & set all sorts of codes

codes keep popping up..sounds like wrong fuel type..try a higher octane fuel for a bit..

You will need to figure out if you have spark to the plugs, and if not- if you have voltage to the coil to proceed.

The EGR Valve could be an issue

Almost certain you will have 1 or 2 bad cop
ignition coils a year,so misfire ,yes

Could be several other problems

Need the correct spark plugs,they are special
to the LS,anything will fit,but not work right

O2 Sensors have to get changed at 100,000 miles

MAF Sensor Cleaned

V6 or V8

V8 is a lot easier to work on & less issues

in this case i would say the engine valves are the problem.the ticking is a valve noise and points to a sticking valve.change the oil and use a sythathic oil it cost more but worth it plus change oil filter and ad a oil enhancer a small tub but worth it ,you will see the change right away.adrian

have you changed the plugs. your owners manual may say 100k miles, but typically its about 70k.

Change ur spark plugs and your coil packs - its time!

as far as the abs light goes, and depending on the code of the engine light, you may just have a bad abs sensor, and replacement should fix your problems, although you should have a shop replace them.

your engine light could also be from a misfire, which could be the cause of your 'puttering'. that is the most likely cause, which can be a number of problems from your spark plugs being fouled to inactive injectors.

Very common problem is about a dime size hole wearing in the rubber elbow on the PCV valve located on the driver side rear of the intake manifold.