Question about 1994 Mercury Grand Marquis
Your codes indicate both sides of your engine are running lean. You may have success with a throttle position sensor. The TPS tells the engine how much fuel is wanted and to advance spark. It is behind the plastic ductwork, on the metal body called an airhorn. Usually on the drivers side. It has 2 screws and 1 electric plug and rides the butterfly flap outside the airhorn. Used to be $25.
I see you have codes and I can not tell you why it did not pull up the TPS. The alternative is to have someone check your fuel pump pressure.
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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