Having problems with your 1996 Mercury Grand Marquis ?
It beagn to hesitate at takeoff, then began mssing as it shifted and running rough. Check engine lamp blinked, then came on solid. Plugs and wires are old. Don't hae code yet.
Will the OBD drill down to a cylinder?
I would change the plugs and wires first with a new fuel filter and air filter. If the problem still hunts you change the EGR valve. Hope this helps.
Repair Help & Product Troubleshooting for 1996 Mercury Grand Marquis
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