94 New Yorker, 3.5 engine. Recently replaced the water pump / timing belt, engine ran fine for about a week. Now it runs very rough and I smell raw fuel in the exhaust. The only error code I get is 66-no comm with trans module. Replaced the plugs, wires are not perfect but ok. This problem first occured while driving at highway speed. Lost power and runs very rough. Any suggestions?
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Thursday, February 21st, 2013 AT 6:15 PM