Port Fuel Injector C2-11; Pressure Regulator Assembly; Cold Start Fuel Injection Switch; Throttle Body Assembly - Pontiac Fiero 1988 Service Manual

6E3-C2-12 DRIVEABILITY AND EMISSIONS - FUEL INJECTION (PORT)
NOTICE:
To prevent dirt from entering the engine,
the area around the injectors should be
clean before servicing.
J 4 - » | Remove o r Disconnect
1. Plenum and fuel rail assembly, following previous
instructions.
Rotate injector retainer clip to release
position, as shown in Figure C2-18.
2. Port fuel injector.
Important
When ordering new fuel injectors, refer to Figure
C2-19 for part number information.
Disassemble
Injector o-ring seals from both ends of injector and
discard.
Assemble
1. Lubricate new injector o-ring seals with engine oil
and install on injector.
2. Retainer clip onto injector.
|-»<-| Install or Connect
1. Injectors to fuel rail and pressure regulator
assembly.
2. Rotate injector retainer clip to locking position
(see Figure C2-18).
3. Plenum and fuel rail assembly, following previous
instructions.
PRESSURE REGULATOR ASSEMBLY
[T| I m p o r t a n t
The pressure regulator assembly is factory
adjusted and is not serviceable. Do not attempt to
remove the regulator from the fuel rail.
COLD START FUEL INJECTION SWITCH
Replacement
4-+
Remove or Disconnect
1. E lectrical connector.
2. Cold start fuel injection switch.
Install or Connect
+ 4-
1. Coat threads with pipe sealant.
2. Cold start fuel injection switch.
3. Electrical connector.
17
N-m
(12.5 F T . LBS.)
[T]THROTTLE
B O D Y
fT"!
A I R P L E N U M
f T ] T.P.S.
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C O L D S T A R T V A L V E A I R T U B E
[ T ] G A S K E T f ~ 6 ~ ] L A . C V A L V E
5
S 1 9 1 9 - 6 E
Figure C2-20 - Throttle Body Assembly Removal
THROTTLE BODY ASSEMBLY
Replacement (Figure C2-20)
The throttle body assembly repair procedures
cover component replacement with the unit on the
vehicle. However, throttle body replacement requires
that the complete unit be removed from the engine.
NOTICE:
The throttle position sensor (TPS), idle air
control (IAC) valve, throttle body, with
seals, or gaskets in place, should NOT be
soaked in liquid solvent or cleaner, as they
may be damaged. If the TPS or IAC valve
is still mounted in the throttle body, do not
immerse.
! J g
]9 Cleaning and Inspection
Throttle body parts, except as noted above, may be
cleaned in a cold immersion-type cleaner such as
AC Delco X-55 or equivalent.
Clean all metal parts thoroughly and blow dry
with shop air. Be sure air passages are free from
burrs and dirt.
Inspect mating casting surfaces for damage that
could affect gasket sealing.
4»»
1
2.
3.
4.
5.
6.
7.
Remove or Disconnect
TPS and IAC valve electrical connectors.
Coolant lines.
Throttle linkages.
Air inlet duct.
Throttle body retaining bolts.
Throttle body assembly.
Flange gasket and discard.