2002 Mercury Grand Marquis Engine Sputters.

Asked by Red Feb 17, 2021 at 03:12 PM about the 2002 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

My 2002 Mercury Grand Marquis LS sputters
from a stop and sometimes over 45 mph it
has 187k miles I have replaced the following
and the problem is still happening. All 8
Ignition coils and spark plugs and ignition coil
Connectors. New alternator new battery and a
new Fuel pump aswell as fuel filter. It has a
new EGR and EGR pressure sensor. New IAC
valve. And still the car has sputtering
problems. I have also cleaned my MAF and
throttle body.

1 Answer
159,315

Bob answered 3 years ago

Keep throwing parts at it and eventually you may get it fixed.

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