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No, not as standard.
Behind the intake plenum.
Intake manifold gaskets are leaking, intake manifold is warped.
it is under the intake manafold on the right side
It is under the intake manafold
Its in the air cleaner lid towards the rear.
The spi Split Port Induction intake manifold will have to be replaced.
It's a black box behind the "EFI" on the intake manafold.
On a 1999 Mercury Grand Marquis : The Mass Air Flow Sensor should be between the engine air filter and the big engine air intake tube
Ineed the torque sequence and tightening specs for a 92 GM 3800 intake.
Isc motor is stuck or sticking causing a "blowing over bottle" effect in the intake tract.
the intake are next to the carb and the exhaust are next to the exhaust manafold intake are .008 exhaust are .012 with the engine warm good luck