Question about 2000 Mercury Grand Marquis
You need to get a coolant system and cylinder leakage test done, you may have an internal problem with the engine. Once this is done it will remove that possibility. Next if that comes back ok then start to look at the ignition control circuits, but because you have replaced most of the main components of this area which the fault code indicates it is tending to lead to coolant getting into the engine.
So have this done and get back to me and I can give you more information on what to do. The fault codes you have been getting can you tell me them?
Let me know what you find.
Posted on Mar 14, 2011
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Posted on Jan 02, 2017
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