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03·04A-4
Fuel Charging and Controls-3.8L
DESCRIPTION AND OPERATION (Continued)
Part
Item
Number
Description
1
9C968
Fuel Pressure Regulator
2
9H323
Fuel Pressure Relief Valve
Cap
2
9H32 1
Fuel Pressure Relief Valve
4
9F792
Fuel Injection Supply
Manifold
5
N804836-S53
Retaining Clip
6
9F593
Fuel Injector
7
N805 1 17-S8M
Bolt (4 Req'd)
8
N60669 1-S2
Bolt
9
N804835-S2
Stud Bolt (2 Req'd)
10
9424
Intake Manifold, Upper
1 1 N804839-S2
Bolt (4 Req'd)
1 2 9H486
Intake Manifold Upper
Gasket
(Continued)
Fuel Injectors
The six fuel injectors are:
•
electro-mechanical devices which both meter and
r-.
atomize fuel delivered to the engine.
•
mounted in the cylinder head pockets.
·
•
positioned so that their tips are directing fuel just
before the engine intake valves (6507).
The fuel injector valve body consists of the following:
•
solenoid
•
needle and valve assembly
•
director /metering plate
An electrical control signal from the powertrain control
module (PCMX 1 2A650) activates the fuel injector
solenoid, causing the needle to move inward, off the
seat, allowing the fuel to flow. Since the fuel injector
flow orifice is fixed and the fuel pressure drop across
the injector tip is constant:
•
fuel flow to the engine is regulated by the length of
time the solenoid is energized.
•
atomization of the fuel is obtained by a
director
I
metering plate where the fuel separates.
Part
Item
Number
1 3 9424
1 4 9E936
15
N804758-S2
1 6
9E926
17
90475
A
-
B
-
c
-
D
-
E
-
Part
Item
Number
1
-
2
-
3
-
4
-
5
-
03·04A·4
Description
Intake Manifold, Lower
Throttle Body Gasket
Nut (4 Req'd)
Throttle Body
EGR Valve
Tighten to 0.6 N·m (5 Lb-ln)
Tighten to 7.75 N·m (68
Lb-ln)
Tighten to 8- 1 1 N·m (7 1 -97
Lb-ln)
Tighten to 20-30 N·m ( 15-22
Lb-Ft)
Tighten in three steps:
- 10 N-m (88 Lb-ln)
-20 N·m (15 Lb-Ft)
-32 N·m (23 Lb-Ft)
V10186-A
Description
Outer 0-Ring Seal
(Upper)(Part of 9F593)
Outer 0-Ring Seal
(Lower)(Part of 9F593)
End Cap (Part of 9F593)
Washer (Part of 9F593)
Coil Terminal (Part of 9F593)
1997 Thunderbird, Cougar July 1996