Car Problem Reports
Mercury Grand Marquis Misfire due to failed spark plugs or ignition coil
Mercury Grand Marquis Problem
Average Mileage: 138,017 mi (80,101 mi - 172,000 mi)
Visitor, 2000 Mercury Grand Marquis, 80,101 mi
one morning the check engine light went on and the car rode rough. I figured bad gas or fuel filter. 2 miles on the check engine light started blinking. Call to mechanic told me to get the car to him ASAP. Drove 6 miles home going 10mph on the shoulder, praying all the way. Bad ignition coil. He replaced all the plugs. Got off cheap, could have been catalytic converter or worse. Otherwise great highway car.
Visitor, 2000 Mercury Grand Marquis, 167,988 mi
Had a stalling problem, that went away, now it chugs and has a misfire, plus gas caused the stalling when I went back to regular it didn't stall, P0304 cylinder 4 misfire.
Had Crack Intake but Replace; Also put new spark Plugs
and #4 and #2 coil packs in. but still having skipping issues
Visitor, 2000 Mercury Grand Marquis, 150,000 mi
engine (chugs)misses at times new plugs / fuel filter have not helped