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1984 Mercury Grand Marquis Base 2D Coupe

1984 Mercury Grand Marquis
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March 3, 2013, 6:05 pm

Steven H

Question: trouble codes

check engine light is on i check codes found code p0320 ignition/distributor engine speed input circut malfuntion and code 0308 cylinder #8 missfire i replaced coil pack and plugin still get miss fire code

March 5, 2013, 4:58 pm

Ron W
Expert Mechanic

Sounds like the ignition module or possibly the crank position sensor may be the issue. Here is a link to information on both codes.

P0320 FORD - Ignition/Distributor Engine Speed Input Circuit Malfunction

P0308 Code - Cylinder #8 Misfire

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