EFI ENGINES— SLUDGE IN THROTTLE BODY AND/O

COLD START — DURING INITIAL START-UP, IDLE
•HARD
DECEL
OR
— EFI ENGINES — SLUDGE IN THROTTLE
Article No.
91- 25- 7
BODY AND / OR IDLE AIR BY-PASS VALVE
/ STALLS — DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
FORD: 1983-87 EXP
1983-91
1984-90
1986-90
1986-91
1988-90
ESCORT
MUSTANG, THUNDERBIRD
TAURUS
CROWN VICTORIA
TEMPO
LINCOLN-MERCURY:
LIGHT TRUCK:
1983-85 LN7
1983-87 LYNX
1984-88 CAPRI
1984-90 COUGAR
1986-90 CONTINENTAL, MARK VII, SABLE
1986-91 GRAND MARQUIS, TOWN CAR
1988-90 TOPAZ
1991 TRACER
1985-90 BRONCO II , BRONCO
1985-91 ECONOLINE, F- 150-350 SERIES
1985-92 RANGER
1986-91 AEROSTAR
1991 EXPLORER
ISSUE: Hard
cold starts, hesitation and stalls on
initial start - up or during idle or decel may
be caused by sludge in the throttle body
and / or idle by -pass valve. Sludge deposits
or oil film on the throttle body bore and
plate or the idle air by -pass valve may
cause one or more of the following
conditions.
•Hard Cold Start
Stall On Initial Start - Up
•Stall
During Idle
• During
Decel
Stall
•Rough
Idle
•
Rolling Idle
•Hesitation During Acceleration
•
OArtC
40
IA 4 A
-
ru 'lflL'
ACTION:
A new idle air by - pass service kit
(F 2PZ - 9F939- A) is now available for
service use to correct sludge
contamination concerns of the throttle
bore and plate only. It eliminates the
need to clean the majority of past model
throttle body applications. Cleaning is
not required on sludge tolerant throttle
body designs released for 1991 and
newer model years.
Install an idle air by -pass service kit
(F 2PZ - 9F 939 - A) as applicable to provide a
permanent correction for symptoms caused by
throttle body sludge deposits. Refer to the
instruction sheet included in the kit for installation
details. Refer to Figure 1 for a specific application
list of EFI (port fuel Injection) engines involved in
this TSB article .
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
Article No.
91- 25- 7
Cont’d.
BODY AND / OR IDLE AIR BY -PASS VALVE
/ STALLS — DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
CHECKS TO MAKE PRIOR TO SERVICE KIT
INSTALLATION
The idle air by - pass service kit (F 2PZ -9F939 - A )
includes the following items.
•One ((1)) Idle Adjust Spacer
•Two (2) Gaskets
Two 2 Attaching Bolts
•One
Sticker
•One (( 1)) “ Attention” Sheet
1
Instruction
•
Refer to Figure 2 for a pictorial of the kits
components.
NOTE: EFFECTIVE WITH THIS TSB, THROTTLE
BODY CLEANING IS NO LONGER
COVERED UNDER 5 / 50 EMISSIONS
WARRANTY, UNLESS AS SPECIFIED IN
THE FOLLOWING APPLICATION CHARTS.
FAILURE TO FOLLOW THE CORRECT
PROCEDURE MAY RESULT IN THE CLAIM
BEING DISALLOWED.
The idle air adjust spacer incorporates sludge
tolerant design features that eliminate throttle body
sludge related conditions. Once installed, throttle
body cleaning is not allowed and periodic
adjustment of the throttle body is not required.
Confirm that the following items are not causing the
idle quality concern before proceeding with the
service kit installation.
Contamination within the idle air by -pass solenoid
•Lack of fuel
control ( excessively rich or
•lean)
Ignition timing
•Incorrect
EGR
or
•
or malfunctioning cooling
•Incorrect
Vacuum leaks air intake manifold, vacuum hoses,
•vacuum
reservoirs , power brake booster where
system
change
malfunctioning
system
system
(
applicable)
diagnostics have been performed and
•EEC
vehicle malfunction indicated service output code
;
have been resolved and cleared.
If any of the areas listed above are found to be at
fault, correct them before proceeding with the
service kit installation.
IDLE SPEED ADJUSTMENT
WARNING: BEFORE PROCEEDING WITH THE IDLE
SPEED ADJUSTMENT, VERIFY THAT
THE FOLLOWING ITEMS ARE TAKEN
CARE OF PROPERLY.
The transmission is in PARK or
Neutral.
The parking brake is applied.
The wheels are properly blocked.
The engine is at operating
•
•
•
•temperature.
fan and
heater. A C ,
•The
other accessories are OFF.
/
cooling
The EFI throttle body idle speed adjustment
procedures for the various model year passenger
cars and light trucks are outlined in step-by - step
procedures featured in Figures 3, 4 and 5 Select
the appropriate procedure for the vehicle involved
and adjust the throttle body idle RPM accordingly,
after service kit installation.
.
PAGE 1'
Article No.
91- 25- 7
Cont’d.
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
/ STALLS — DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
THROTTLE BODY AND IDLE AIR BY-PASS
SOLENOID SERVICE PROCEDURE
CAUTION: DO NOT RUN VEHICLES EQUIPPED
WITH AIR FLOW METERS DURING THE
CLEANING PROCEDURE. IF THERE IS
A YELLOW / BLACK “ ATTENTION”
LABEL ON THE THROTTLE BODY
ADVISING NOT TO CLEAN, OR IF THE
VEHICLE IS IDENTIFIED AS
ACCEPTING SERVICE KIT
(F 2PZ- 9F939- A ), USE PROCEDURE # 2
FOR IDLE AIR BY-PASS VALVE
CLEANING ONLY.
Detailed application charts for throttle body and idle
air by- pass solenoid service procedures by engine
VIN # / engine displacement / vehicle application and
model year are shown in Figures 6 through 11.
Refer to these charts to see if the service kit is to
be installed and which service cleaning procedure ,
if any, is to be used.
SERVICE CLEANING PROCEDURES
The following items should be noted prior to
beginning the service cleaning procedure.
1.
Plug the actuator into the connector in the
Rotunda Cleaner / Tester, Tool 113- 00009 .
Confirm that the correct service cleaning
•procedure
is identified in the Application Charts ,
2.
Remove the air duct to the throttle body inlet .
Figures 6 - 11 , for the vehicle / engine combination
being serviced.
3.
Disconnect the idle air by-pass valve signal
lead.
not clean throttle bodies identified to accept
•Do
service kit (F 2PZ- 9F939 - A ) , IDLE AIR ADJUST
4.
Attach the actuator harness plug to the idle air
by - pass valve.
5.
Start the actuator and then start the engine. Do
not start engines that have air flow meters .
6.
Spray just enough Carburetor Tune- up Cleaner
(D9 AZ - 19579- AA ) into the throttle bore to wet
the bore and throttle plate .
7.
Spray the Carburetor Tune- up Cleaner for about
five (5 ) seconds into the idle air by - pass valve
inlet passage while the actuator is operating .
•Do not run vehicles with air flow meters when the
8.
•Do not use carburetor cleaner- upas a cleaning
Stop the engine and actuator. Let everything
soak for fifteen ( 15) minutes.
9.
After a fifteen ( 15) minute soak , saturate the
cleaning brush with solvent and scrub between
the throttle body bore and plate while holding
the throttle wide open.
SPACER .
•
Use a 1 " ( 25.4 mm) to 1 1 / 2" ( 38.1mm) wire
stemmed horse hair or nylon bottle cleaner type
brush .
•
not clean throttle bodies identified with a
•Do
yellow / black " ATTENTION” label.
” plastic air by - pass valves .
•Do not clean “ Black
- 13- 8
.
Use rubber gloves and eye protection.
Refer to TSB 89
for service details
air duct is removed.
solvent . Use Carburetor Tune
(D9 AZ - 19579- AA ) .
Cleaner
PROCEDURE # 1
THROTTLE BODY AND IDLE AIR BY -PASS VALVE
CLEANING
NOTE: IT IS NECESSARY TO APPLY SOME
PRESSURE ON THE BRUSH WHILE
SCRUBBING.
10. Repeat saturating the brush and scrubbing for
one ( 1 ) to two ( 2) minutes , making sure to
reach into the corners where the throttle shaft
meets the bore wall.
DAftF
on
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
Article No.
91- 25- 7
Cont’d.
/ STALLS — DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
11. Start the actuator and the start the engine. Do
not start engines that have air flow meters.
CAUTION: THIS CLEANING PROCEDURE MAY BE
USED WITH SLUDGE TOLERANT
THROTTLE BODIES WHICH ARE
IDENTIFIED WITH A YELLOW / BLACK
“ ATTENTION" LABEL AND THOSE
USING SERVICE KIT (F 2PZ- 9F 939- A ).
NO ATTEMPT SHOULD BE MADE TO
CLEAN THROTTLE BODY BORE / PLATE
AREA BY DIRECT SPRAYING OR
SCRUBBING. DO NOT RUN VEHICLES
WITH AIR FLOW METERS DURING
CLEANING PROCEDURE.
12. Spray Carburetor Tune - up Cleaner into the
throttle bore for up to one ( 1) minute to wash
away residue. Do not spray for longer than six
(6) continuous seconds on engines that have
air flow meters and are not running.
13. Spray Carburetor Tune - up Cleaner into the idle
by - pass valve passage leading to the inlet of
.
the valve for up to one ( 1) minute Do not spray
for longer than six (6) continuous seconds on
engines that have air flow meters and are not
running .
.
1
Plug the actuator into the connector in the
Rotunda Air By -Pass Valve Adapter 113 -00009,
or equivalent.
2.
Remove the air duct to the throttle body inlet.
14. Slop actuator and stop engine, if running.
NOTE; MAKE SURE THE THROTTLE PLATES
OPERATE FREELY AND CLOSE PROPERLY.
.
3
Disconnect the idle air by -pass valve signal
lead .
16 Start and run the engine for about one ( 1)
minute to dry out the solvent residue
4.
Attach the actuator harness plug to the idle air
by -pass valve.
17. Operate the actuator to make sure the solvent
is purged from the idle by -pass valve.
5.
Start the actuator and then start the engine.
15. Reinstall the air duct .
.
.
18. Disconnect the actuator from the idle air
by -pass valve.
19. Reattach the control signal lead to the air
by - pass valve.
20. Check engine for normal operation. It may be
necessary to reset the idle speed due to a
previous adjustment for an idle concern (Refer
to the respective Powertrain / Emissions
Diagnosis Service Manual, Throttle Body
Section, for idle speed adjust procedure.)
.
PROCEDURE # 2
IDLE AIR BY - PASS VALVE CLEANING ONLY
NOTE: DO NOT START ENGINES THAT HAVE AIR
FLOW METERS.
.
6
Spray the Carburetor Tune -up Cleaner for about
five (5) seconds into the idle air by -pass valve
inlet passage while the actuator is operating.
CAUTION: AVOID DIRECT SPRAYING ON
THROTTLE PLATE / BORE AREA .
7.
Stop the engine and actuator. Let everything
soak for fifteen ( 15) minutes.
8.
Start the actuator and the start the engine.
CAUTION: DO NOT START ENGINES THAT HAVE
AIR FLOW METERS.
.
9
Spray Carburetor Tune - up Cleaner into the
throttle bore for up to one ( 1) minute
.
CAUTION: DO NOT SPRAY FOR LONGER THAN
SIX (6) CONTINUOUS SECONDS ON
ENGINES THAT HAVE AIR FLOW
METERS AND ARE NOT RUNNING.
PAfiF 91
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
Article No.
91- 25- 7
Cont’d.
BODY AND / OR IDLE AIR BY-PASS VALVE
/ STALLS — DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
10. Stop actuator and stop engine if running.
LABOR STANDARDS OPERATIONS
11. Reinstall the air duct .
The labor operations shown in the following
Operation / Description / Time columns are identified
by procedure number and vehicle line. Specific
engines for various vehicles are identified in the
sludge cleaning procedure application charts. The
throttle body cleaning operations with combinations
and the air by - pass valve cleaning combinations will
appear in future Labor Manuals under the following
operation numbers.
12. Start and run the engine for about one ( 1)
minute to dry out the solvent residue.
13. Operate the actuator to make sure the solvent
is purged from the idle by -pass valve.
14. Disconnect the actuator from the idle air
by pass valve
-
.
15. Reattach the control signal lead to the air
by -pass valve.
16. Check engine for normal operation.
NOTE: IT SHOULD NOT BE NECESSARY TO
RESET THE IDLE SPEED SINCE ONLY THE
IDLE AIR BY-PASS VALVE WAS SERVICED
IN THIS PROCEDURE
WARRANTY COVERAGE
Throttle bodies and idle air by -pass valves on all
EFI (Port Fuel Injection) engines through the 1992
model year that can be cleaned (as identified in the
application charts) are covered under 5 / 50
Emissions Warranty Coverage.
For those throttle bodies identified as having sludge
tolerant designs or using service kit
(F2PZ - 9F939 - A ) where cleaning is not allowed per
the application charts, the warranty claims for
cleaning will not be reimbursed even within the
12 / 12 warranty coverage period Cleaning is not
allowed. Service kit installation (single time) is
covered under 5 / 50 emission warranty
.
.
PAGE 22
•9926 B - Throttle body and idle air
by - pass valve
cleaning
•9926 B2 - Adjust idle speed
•9715 A - Air by-pass valve cleaning only
•9715 A 1 - Adjust idle speed
PART NUMBER
F2PZ - 9F939 - A
D9 AZ - 19579 - AA
PART NAME
Idle Air By - pasa Service Kit
Carburetor Tune- Up Cleaner
CLASS
B
BQ
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
Article No.
91- 25-7
Cont ’d.
BODY AND / OR IDLE AIR BY-PASS VALVE
HESITATION / STALLS — DURING INITIAL START-UP, IDLE
•OR
DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
-
OTHER APPLICABLE ARTICLES: 89- 13 8
SUPERSEDES: 88- 24- 5, 88 - 24 - 6, 89- 16- 5 , 91 - 10- 9,
9125071
91- 7 - 4
WARRANTY STATUS: Eligible Under Warranty
Coverage As Stated In The
Text Of This Article
TIME
OPERATION DESCRIPTION
Idle Air By -Pass Valve
0.5 Hr.
912507 A
Cleaning - 1983 - 85 Escort,
EXP, LN7, LYNX 1.6L EFI.
Idle Air By - Pass Valve
B
0.5 Hr.
912507
Cleaning - 1986 - 91 Escort
1.9L EFI, 1986 / 87 EXP,
Lynx 1.9L EFI, 1991 Tracer
1.9L EFI.
Idle Air By Pass Valve
0.5 Hr.
912507 C
912507 J
912507K
.
912507D
912507E
912507F
912507G
912507H
Idle By -Pass Valve Cleaning
- 1988-91 Tempo , Topaz
2.3L HSC, 1985 - 92 Ranger
2.3L EFI.
Idle Air By -Pass Valve
Cleaning - 1986 / 87
Aerostar 2.3L EFI, 1985
Bronco II 2.3L EFI.
Idle Air By-Pass Valve
Cleaning - 1986 - 90 Bronco
II 2.9L EFI, 1986- 92 Ranger
2.9L EFI.
Idle Air By -Pass Valve
Cleaning - 1991 / 92 Probe
3.0L EFI, 1986 - 91 Taurus
3.0L EFI, 1987 - 91 Sable
3.0L EFI.
Idle Air By - Pass Valve
Cleaning - 1986 - 91
Aerostar 3.0L EFI, 1991
Ranger 3.0L EFI.
0.6 Hr.
0.7 Hr.
0.7 Hr.
-
.
-
Mustang 2.3L EFI.
-
-
-
Cleaning 1984 - 87 Mustang
2.3L T / C 1986 / 87 Capri,
Cougar 2.3L T / C, 1984 88
T-Bird 2.3L T / C, 1987 / 92
Idle Air By -Pass Valve
Cleaning - 1988
Continental, Cougar, Taurus ,
T-Bird, Sable 3.8L EFI.
1988 Cougar, T-Bird 3.8L
S / C.
Idle Air By Pass Valve
Cleaning - 1990- 92
Aerostar 4.0L EFI, 1990
Bronco II 4.0L EFI, 1991 / 92
Explorer 4.0L EFI, 1990- 92
Ranger 4.0L EFI.
Idle Air By -Pass Valve
Cleaning - 1987 - 92 Bronco
4.9L EFI, 1987 92 F Series
4.9L EFI, 1987 / 90
Econoline ( Without Rear
Heater) 4.9L EFI 1991 / 92
912507L
0.6 Hr.
0.7 Hr.
912507M
0.7 Hr.
912507N
0.8 Hr.
Econoline ( All) 4.9L EFI.
Idle Air By -Pass Valve
0.6 Hr.
Cleaning - 1986- 88 Cougar,
T-Bird 5.0L EFI, 1986- 87
Continental, Mark VII 5.0L
EFI, 1986 / 91 Cm - Victoria,
Grn - Marquis 5.0L EFI,
1986 - 92 Mark VII 5.0L HO,
1982- 92 Mustang 5.0L HO .
0.7 Hr.
Idle Air By -Pass Valve
Cleaning - 1985 - 92 Bronco ,
E-Series , F- Series 5.0L EFI.
Idle Air By -Pass Valve
0.7
Cleaning - 1988 - 90 Bronco ,
F- Series 5.8L. 1991 Econo,
F- Series, Bronco 5.8L (Do
not Clean Solenoid, Calib;
1- 64E- R 10, 1 - 64H- R 10, 1 - 64J- R10,
1- 64 K - R 10 , 1 - 64 M - R 10, 1 64 P R 10,
1 - 64 R - R 10 , 1 - 75 A -R 00, 1 -76 A - R 00,
1-76B- ROO, 1 -76 C - ROO.
Idle Air By -Pass Valve
0.7 Hr.
Cleaning - 1991 / 92 F And
B Series , 7.0L EFI.
Idle Air By -Pass Valve
0.7 Hr.
Cleaning 1987 - 92
E -Series, F- Series 7.5L EFI.
-
0.7 Hr.
9125070
912507P
-
-
PAGE 23
Article No.
91- 25-7
Cont’d.
COLD START — DURING INITIAL START-UP, IDLE
•HARD
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
/ STALLS— DURING INITIAL START-UP, IDLE
•HESITATION
OR DECEL — EFI ENGINES — SLUDGE IN THROTTLE
BODY AND / OR IDLE AIR BY-PASS VALVE
912507 Q
912507R
912507 S
912507T
riA
^e
Throttle Body And Idle Air
By - Pass Valve Cleaning 1989 / 90 Probe 3.0L EFI.
Throttle Body And Idle Air
By - Pass Valve Cleaning 1987 - 90 Econoline ( With
Rear Heat) 4.9L EFI.
Throttle Body And Idle Air
By -Pass Valve Cleaning 1988- 90 Econoline 5.8L
EFI.
Service Kit Install - All Cars
And Light Trucks (Except
Aerostar And Econoline) Refer To The Service
Procedure Application
Charts, For Vehicle
Application.
0.9 Hr.
0.8 Hr.
.
0.9 Hr
1.0 Hr.
912507U
-
Service Kit Install
Aerostar, Econoline - Refer
To Service Procedure
1.2 Hr.
Application Charts - For
Vehicle Application.
DEALER CODING
BASIC PART NO. CONDITION CODE
9E926
49
OASIS CODES: 602300, 607000, 607400, 607700,
608400, 611500, 618400
-
-
SERVICE KIT 9F939
APPLICATION CHART EFI PORT FUEL INJECTION ENGINES
—
CAR
APPLICATION
MODEL
YEAR
1983- 85
ESCORT GT/LYNX, EXP/LN7
1986-87
ENGINE
1.6L EFI
ESCORT GT/LYNX, EXP
1.9L EFI
1988 90
ESCORT GT
1.9L EFI
1991
ESCORT/TRACER
1.9L EFI
1984-88
MUSTANG
2.3L EFI
THUNDERBIRD/COUGAR, MUSTANG/CAPRI
2.3LTC
1988-90
TEMPO/TOPAZ
2.3L HO/HSC
1986-90
TAURUS/SABLE
3.0L EFI
1988-90*
1988-90
TAURUS/SABLE
THUNDERBIRD/COUGAR
3.8L EFI/SC
1988-90
CONTINENTAL
3.8L EFI
1986 91
CROWN VICTORIA/GRAND MARQUIS, TOWN CAR
5.0L EFI
1986-88
THUNDERBIRD/COUGAR
5.0L EFI
1986-87
CONTINENTAL, MARK VII
5.0L EFI
1986 -90
MARK VII LSC, MUSTANG
5.0L HO
-
1987 90
-
3.8L EFI
LIGHT TRUCK
APPLICATION
MODEL
YEAR
ENGINE
1985
BRONCO II
2.3L EFI
1985 -90 * *
RANGER
2.3L EFI
1986- 87
AEROSTAR
2.3L EFI
1986 -92
RANGER/BRONCO II
2.9L EFI
1986 -90
AEROSTAR
3.0L EFI
1990-91 * **
RANGER , EXPLORER, AEROSTAR
4.0L EFI
1987 - 90
F-SERIES/BRONCO
4.9L EFI
1987-90
ECONOLINE ( WITHOUT REAR HEAT)
4.9L EFI
1985-90
F-SERIES/BRONCO, ECONOLINE
5.0L EFI
1988-90
F-SERIES/BRONCO
5.8L EFI
1987-91 * ***
F-SERIES, ECONOLINE
7.5L EFI
NOT FOR USE ON THE FOLLOWING EFI ENGINE APPLICATIONS:
1988 -90
1988 -89
1985-89
1988-89
FESTIVA
1.3L EFI
TRACER
1.6L EFI
2.3L TC
XR 4Ti
SCORPIO
2.9L EFI
PROBE
1989-90
2.2L, 2.2L TC AND 3.0L EFI
1989-90
3.0L SHO
TAURUS
1987-90
4.9L EFI (WITH REAR HEAT)
ECONOLINE
1988 -90
ECONOLINE
5.8L EFI
NOT APPLICABLE FOR 1991 MODEL YEAR EXCEPT WHERE LISTED
NOT APPLICABLE FOR 1992 MODEL YEAR EXCEPT WHERE LISTED
.
• CUT OUT HOOD INSULATION PAD, IF NECESSARY, TO AVOID POSSIBLE CONTACT WITH THE IABP SOLENOID
MODEL YEAR BUILT BEFORE 5/90
•” 1991 MODEL YEAR BUILT BEFORE 1/91
* *** 1991 MODEL YEAR ALL CALIBRATIONS EXCEPT 1-97A -R00, 1- 98 A -R00 1-98B-R 00, 1-98C-R00, 1-98E-R00 AND 1-98F-R 00
*' 1990
.
-
.
-
TB 2432 A
Figure 1
-
Article 91- 25- 7
PAGE 2
IDLE AIR ADJUST SPACER INSTALLATION DIAGRAM
IABP SOLENOID MOUNTING
LOCATION - TYPICALLY ON
IDLE ADJUST SPACER
THROTTLE BODY (ON INTAKE
KEYWAY PORT MUST ALIGN
MANIFOLD OR AIR CLEANER
WITH CLEAN AIR PORT
HOUSING ON SOME APPLICATIONS)
CLEAN
AIR PORT
WRAP "ATTENTION" STICKER
AROUND IABP SOLENOID
WIRE HARNESS LEAD
.
MANIFOLD
VACUUM
PORT
C/ / Q
Q
IV
O
0
Q
Q
ADJUST ONE OR BOTH
TRIM SCREWS AS NEEDED,
USE 2.5mm ALLEN WRENCH
(DO NOT ADJUST SCREWS OUT
BEYOND FLUSH WITH SPACER BODY)
.
K
REMOVE CENTER CUP
PLUG FOR 5.8LAND
7.5L ENGINES
TB*2433-A
Figure 2
PAGE 26
-
Article 91- 25- 7
/
Ji
SILVER IABP
OR BLACK
IABP
SOLENOID
ORIENTATION
TO CLEAN
AIR PORT
1983-1990 MODEL YEARS
1983-85
1.6L EFI
—
PASSENGER CAR — EFI THROTTLE BODY IDLE SPEED ADJUST PROCEDURES
1986-90
1.9L HO
1984-88
2.3L TC
1988-90
1987- 90
2.3L OHC 2.3L HSC/HO
1. UNPLUG SPOUT
1986-90
3.0L EFI
X
X
X
X
1988-90
1986-90
3.8L EF1/SC 5.0L EFI/HO
LINE AND VERIFY
THAT IGNITION
TIMING IS BASE
±2° BTDC
2. REMOVE PCV
HOSE AT VALVE
AND INSTALL .2'
DIAMETER ORIFICE
TOOL T86P -9600 - A
3. DISCONNECT
X
X
X
X
X
X
X
X
2000/60
2000/60
2000/120
1500/30
2500/30
1989- 90
2000/30
1988
2500/30
1800/30
DRIVE
PARK
PARK
PARK
DRIVE
DRIVE
PARK
DRIVE
550
500
IDLE AIR BYPASS
SOLENOID
CONNECTOR
4. START ENGINE
AND RUN AT:
RPM/SEC...
5. PLACE AUTO
TRANS IN...
MANUAL IN
NEUTRAL
6. CHECK/ ADJUST
IDLE RPM:
TURN THE SERVICE
SPACER TRIM
SCREW TO (RPM)
1986-87
SEE DECAL SEE DECAL
FOR
1988-90
BASE IDLE
975
-
1987 88
750
525
1989-90
A:1050
M:1575
lass
625
19B 6-88
1967
700
A:650
M:600
1988- 90
760
7. SHUT ENGINE
OFF AND DISCONNECT
BATTERY FOR 5 MIN,
RECONNECT
X
.
8. ENGINE OFF
X
X
X
X
X
RECONNECT SPOUT
LINE
9. REMOVE ORIFICE
FROM PCV HOSE,
RECONNECT TO
PCV VALVE
10. ENGINE OFF,
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
RECONNECT IDLE
AIR BYPASS SOLENOID
CONNECTOR
11 . START ENGINE
AND STABILIZE
FOR 2 MIN
.
GOOSE ENGINE
AND LET IT RETURN
TO IDLE. .
IF IDLE PROBLEM STILL EXISTS GO TO SECTION 2 OF H-MANUAL FOR OTHER POSSIBLE CAUSES.
.
.
12. ON AUTOMATIC
XXX
.
OVERDRIVE TRANS
CHECK TV ADJUSTMENT
TB-2434-A
Figure 3 - Article 91- 25 - 7
PAGE 27
1965-1990 MODEL YEARS
1965-90
.
2.3L OHC
— LIGHT TRUCK — EF1 THROTTLE BOOY IDLE SPEED ADJU8T PROCEDURES
196690
2.9L EF1
198690
3.0LEF1
1990
4.0LEF1
-
1 INSTALL FEELER
1989 90
GAUGE BETWEEN
THROTTLE STOP
SCREW & LEVER
0.050'
. .
1989 90
A 0.050*
-
-
-
196690
59LEH
-
196790
7 5LEH
-
1989 90
0.030'
-
1990
1986 87
1989 90
1989 90
1989 90
X
X
X
X
X
.
-
1988 87
X
-
.
.
..
.
6 PLACE AUTO
TRANS IN
MANUAL IN NEUTRAL
7 CHECK/ADJUST
IDLE RPM:
TURN THE SERVICE
SPACER TRIM
SCREW TO (RPM)
X
1BflS-fl7
X
X
lsa&az
1988-90
1500/20
2000/120
1988-90
1988-90
2500/30
2500/30
2500/30
X
X
2500/30
1800/30
X
PARK
1985 88
1800/30
-
1985-88
1987 88
1985-87,
-
1989 90
575
19BB
625
PARK
PARK
1986
A:700
M:750
JJ9&Z
A:700
M.650
-
SHUT ENGINE
OFF AND DISCONNECT
BATTERY FOR 5 MIN,
RECONNECT
DRIVE
.
A 850
M:1040
875
IfiflZ
-
1988 90
1988 90
725
A:625
M:725
X
3887-Bfl
A:550
X
-
1989 90
PARK
1985 88
-
1988
A:550
M:B50
A 575
M:600
1989-90
1989 90
X
A:875
M:700
-
-
PARK
650
-
A:C6
780
-
1989 90
A:E4DD A MAN
730
X
X
1989-90
X
1989-90
1989 90
X
X
1989-90
1989 90
X
1988 87
1988
PARK
M:850
2500/30
DRIVE
1989 90
1989 90
im
1988
1800/60
PARK
«
GAUGE
.
DRIVE
1990
A 75
M:700
9. REMOVE FEELER
10 ENGINE OFF,
-
X
1989 90
1989
@650
#750
A:900
M:1050
X
-
1987 88
DRIVE
...
.
.
196690
SOIL EH
MrO 030*
.
2 UNPLUG SPOUT
LINE AND VERIFY
THAT IGNITION
TIMING IS BASE
±2° BTDC
3 REMOVE PCV
HOSE AT VALVE
AND INSTALL .2*
DIAMETER ORIFICE
TOOL T86P-9600 A
4 DISCONNECT
IDLE AIR BYPASS
SOLENOID
CONNECTOR
5 START ENGINE
AND RUN AT
RPM/SEC.
8
1987-90
4.BL EH
-
-
RECONNECT SPOUT
X
X
X
X
LINE
1988-87
11 REMOVE ORIFICE
FROM PCV HOSE
X
RECONNECT TO
PCV VALVE
12. ENGINE OFF,
X
X
X
X
X
X
X
X
RECONNECT IDLE
AIR BYPASS SOLENOID
CONNECTOR
13 START ENGINE
X
X
X
X
X
X
X
X
AND STABILIZE
FOR 2 MIN,
GOOSE ENGINE
AND LET IT RETURN
TO IDLE
IF IDLE PROBLEM STILL EXISTS, GO TO SECTION 2 OF H MANUAL FOR OTHER POSSIBLE CAUSES
14 ON AUTOMATIC
X
X
OVERDRIVE TRANS,
CHECK TV ADJUSTMENT
@ 1989 MODEL YEAR 4.9L CALIBRATIONS: 7-52ER 7 52JR , 7 52KR , 7 52MR , 7 52QR , 7 52RR , 7 52ZR , 7 72JR
# 1989 MODEL YEAR 4.9L ALL OTHER CALIBRATIONS
.
.
.
...
.
-
-. -
- -
- -
TB-2435-A
Figure 4
- Article 91- 25 - 7
PAGE 28
- -
.
- -
- -
- -
-
1991-1002 MODEL YEARS
EH THROTTLE BODY IDLE SPEED ADJUST PROCEDURES
PASSENGER CAR AND LIGHT TRUCK
—
1001-92 TRUCK 1901 TRUCK 1001 TRUCK
2.9LEH
4.0LEH
7.8L EH
1091 CAR
1.9L EH
1001 CAR
5.0L EH
1 ENGINE OFF, DISCONNECT THE NEGATIVE
TERMINAL OF THE BATTERY FOR 6
MINUTES, RECONNECT BATTERY
X
X
X
X
X
2 DISCONNECT THE IDLE AIR BYPASS
X
X
X
X
X
2000/60
1800/30
2500/30
2500/30
2500/30
X
DRIVE
X
X
X
650
500
700
675
650
X
X
X
X
.
.
SOLENOID CONNECTOR
3. START THE ENGINE AND RUN AT RPM/SEC...
4. PUCE AUTOMATIC TRANSMISSION IN PARK,
MANUAL IN NEUTRAL
.
8 CHECK/ADJUST IDLE RPM, TURN THE
8ERVICE SPACER TRIM SCREW TO (RPM)
...
.
6 SHUT ENGINE OFF AND DISCONNECT
NEGATIVE TERMINAL OF THE BATTERY FOR
5 MINUTES
.
8. START ENGINE AND STABILIZE FOR 2
7 ENGINE OFF, RECONNECT IDLE AIR BYPASS
SOLENOID CONNECTOR
X
X
X
X
X
X
X
X
MINUTES, GOOSE ENGINE AND LET IT
RETURN TO IDLE...IF IDLE PROBLEM 8TILL EXISTS, GO TO 8ECTION 2 OF H MANUAL FOR OTHER POSSIBLE CAUSES.
-
-
-
TB 2436 A
Figure 5
Article 91- 25- 7
PAGE 29
THROTTLE BODY AND IDLE AIR BYPASS SOLENOID SERVICE PROCEDURE APPLICATION CHART
USE SERVICE PROCEDURE 1:
USE SERVICE KIT -9F939USE SERVICE PROCEDURE 2:
CLEAN BOTH THROTTLE BODY
AND CLEAN IABP SOLENOID
DO Mfil CLEAN THROTTLE BODY,
CLEAN IABP SOLENOID ONLY
SERVICE KIT NOT APPLICABLE
ENGINE
VIN
ENGINE
APPLICATION
1983-85 MODEL YEARS
J
1.6L EFI
1983-85 ESCORT GT/LYNX, EXP/LN7
X
W
2.3L T/C
1984-85 T- BIRD, MUSTANG/CAPRI
X
A
2.3LEFI
1985 RANGER /BRONCO II
X
N
5.0L EFI
1985 F/E- SERIES, BRONCO
X
1986 MODEL YEAR
J
1.9L EFI
ESCORT GT/LYNX , EXP
X
A
2.3L EFI
RANGER , AEROSTAR
X
W
2.3L T/C
T-BIRD/COUGAR , MUSTANG/CAPRI
X
T
2.9L EFI
RANGER BRONCO II
X
U
3.0LEFI
TAURUS/SABLE, AEROSTAR
X
F
5.0L EFI
CROWN VIC/GRAND MARQUIS
TOWN CAR , T-BIRD/COUGAR
CONTINENTAL, MARK VII
X
X
X
N
5.0L EFI
F/E-SERIES, BRONCO
X
E
5.0L HO
MARK VII LSC , MUSTANG
X
.
1987 MODEL YEAR
J
1.9L EFI
ESCORT GT/LYNX, EXP
X
A
2.3L OHC
RANGER, AEROSTAR, MUSTANG
X
W
2.3L T/C
T-BIRD/COUGAR, MUSTANG/CAPRI
X
T
2.9L EFI
RANGER , BRONCO II
X
U
3.0L EFI
TAURUS /SABLE AEROSTAR
X
Y
4.9L EFI
F- SERIES, BRONCO
X
Y
4.9L EFI
ECONOLINE ( WITHOUT REAR HEAT)
ECONOLINE ( WITH REAR HEAT)
.
X
X
F
5.0L EFI
CROWN VIC/GRAND MARQUIS
TOWN CAR , T- BIRD/COUGAR
CONTINENTAL, MARK VII
X
X
X
N
5.0L EFI
F/E-SERIES, BRONCO
X
E
5.0L HO
MARK VII LSC , MUSTANG
X
G
7.5L EFI
F/E SERIES
-
X
TB-2437- A
Figure 6 - Article 91 - 25 - 7
PAGE 30
1988 MODEL YEAR
THROTTLE BODY AND IDLE AIR BYPASS SOLENOID 8ERVICE PROCEDURE APPLICATION CHART
ENGINE
V1N
ENGINE
APPLICATION
J
SX
A
W
T
U
4
1.9LEFI
2.31HSC
2.3L EFI
2.3L T/C
2.9L EFI
3.0L EFI
3.8L EFI
ESCORT GT
TEMPO/TOPAZ
RANGER, MUSTANG
T BIRD
RANGER, BRONCO II
TAURUS/SABLE, AEROSTAR
T BIRD/COUGAR, CONTINENTAL
C,R
Y
3.8LSC
4.9L EFI
.
F
5.0L EFI
N
E
H
5.0L EFI
5.0LHO
S 8L EFI
Q
7.5L EFI
.
SERVICE KIT NOT APPLICABLE
U8E SERVICE PROCEDURE 1:
CLEAN BOTH THROTTLE BODY
AND CLEAN IABP SOLENOID
X
X
X
X
X
-
X
X
X
TAURUS/SABLE
T-BIRD/COUGAR
F
,
X
-SERIES BRONCO
X
ECONOLINE (WITHOUT REAR HEAT)
ECONOLINE (WITH REAR HEAT)
CROWN ViC/QRAND MARQUIS
TOWN CAR, T BIRD/COUGAR
F/E-SERIES, BRONCO
MARK VII LSC, MUSTANG
F-SERIES, BRONCO
ECONOLINE
F/E SERIES
TB 2438 A
-
-
USE SERVICE KIT -8F939U8E SERVICE PROCEDURE 2:
DO HQI CLEAN THROTTLE BODY,
CLEAN IABP SOLENOID ONLY
X
X
X
X
X
X
X
- -
Figure 7 - Article 91- 25 - 7
DARE <
!
Figure
-
8
Article
1980 MODEL YEAR
91
-
— THROTTLE BODY AND IDLE AIR BYPASS SOLENOID SERVICE PROCEDURE APPLICATION CHART
25
7
=J
I
SERVICE KTT NOT APPLICABLE
USE SERVICE PROCEDURE 1:
CLEAN BOTH THROTTLE BODY
AND CLEAN IABP SOLENOID
-
ENGINE
VIN
ENGINE
J
1.9LEFI
ESCORT GT
X
sx
2.3LHSC
TEMPO/TOPAZ
X
A
2.3LEF1
RANGER, MUSTANG
X
T
2.9LEF1
RANGER, BRONCO II
X
U
3.0L EFI
TAURUS/SABLE AEROSTAR
4
3.8LEF1
.
T-BIRD/COUGAR CONTINENTAL
TAURUS/SABLE
CR
3 8L SC
T BIRD/COUGAR
Y
4.9LEFI
F-SERIES, BRONCO
ECONOUNE (W/O REAR HEAT)
ECONOLINE (WITH REAR HEAT)
-
APPLICATION
.
CROWN VIC/GRAND MARQUIS
TOWN CAR
N
5.0LEF1
F/E SERIES, BRONCO
E
5.0LHO
MARK VH MUSTANG
H
5 BLEFI
Q
.
7.5LEFI
X
X
-
5.0LEFI
-
-
X
X
X
X
X
X
X
.
F-SERIES, BRONCO
ECONOLINE
F/E SERIES
-
X
.
F
-
-
USE SERVICE KTT 9FB39
USE SERVICE WT 9F939
USE SERVICE PROCEDURE 2:
CLEANING PROCEDURES NOT ALLOWED
DO UQI CLEAN THROTTLE BOOY,
DO NOT CLEAN THROTTLE BOOY
CLEAN IABP SOLENOC ONLY
DO NOT CLEAN 1ABP SOLENOID
X
X
X
Figure
9
-
1990 MODEL YEAR
Article
91
257
ENGINE
ENGINE
VIN
J
sjc
A
1.9L EFI
—
THROTTLE BOGY AND IDLE AIR BYPASS SOLENOID SERVICE PROCEDURE APPLICATION CHART
.
APPLICATION
SEHVXXKTTHOTAPPUCABU
use senvrc
*
pnoceouNe t:
CLEAN BOTH THBCTTU! BOOT
AMD CLEAN lABPSOt£MO©
SEHVtCC KTT MOT APPLICABLE
use sew PNOC D<J t
DO MOT CLEAR THROTTLE BOOT
CLEAN IABP SOLEMOO ONLY
*
*
« .
ESCORT GT
(X) BUILT 5/90 & LATER
MUSTANG
2,9L EFI
RANGER, BRONCO II
U
3.0LEF1
TAURUS/SABLE, AEROSTAR
PROBE
-
* *
X
RANGER
T
.
DO M£HCLEAN THROTTLE POOt
CLEAN IABP 90LEN0B ONLY
(X) BUILT BEFORE 5,90
X
X
X
X
I
4
3.8LEF1
T-BIRD/COUGAR, CONTINENTAL
TAURUS/SABLE
X
X
*
R
3.8LSC
T-BIRD/COUGAR
X
X
4.0LEF1
AEROSTAR, RANGER, BRONCO II
X
Y
4.9LEF1
F-SERIES, BRONCO
ECONOUNE (WITHOUT REAR HEAT)
ECONOUNE (WITH REAR HEAT)
X
X
I
X
F
5.0LEF1
CROWN V1CA3RAND MARQUIS
TOWN CAR
X
X
N
5.0LEF1
F/E-SERIES, BRONCO
X
E
5.0LHO
MARK VII, MUSTANG
X
H
5.8LEF1
F-SERIES, BRONCO
ECONOUNE
G
7.5LEF1
F/E-SERIES
X
X
X
-
URSSIVKZKn tme
CLEANWG P OC DU«S MOT ALLOYWD
DO NQI CLEAR 'mBOTTLE BOOT,
DOKOI CLEAN IABP SOLENOID
X
2.3LHSC TEMPOYTOPAZ
2JLEF1
»
U8C 98tVCC IOT 4F9
use CUAMNO pnocaune 2:
Figure
1991 MODEL YEAR
— THROTTLE BOOY AND IDLE AIR BYPASS SOLENOID SERVICE PROCEDURE APPLICATION CHART
10
-
Article
91
25-
7
SERVICE KIT NOT APPLICABLE
SERVICE KIT NOT APPLICABLE
USE SERVICE PROCEDURE 2: CLEANING PROCEDURES NOT ALLOWED
ENGINE
VtN
ENGINE
J
1.9LEF1
ESCORT/TRACER
SX
.
2.3LHSC
TEMPCVTOPAZ
X
AM
.
2.3L EFI
RANGER, MUSTANG
X
T
2.9L EFI
RANGER
U
3.0L EFI
.
DO NOT CLEAN THROTTLE BOOY
APPLICATION
CLEAN IABP SOLENOID ONLY
-
X
X
.
TAURUS'SABLE AERO/RANGER
PROBE
X
X
4
3.8LEFI
T-BIRD/COUGAR, CONTINENTAL
TAURUS/SABLE
R
3.8LSC
T BIRD
X
4.0LEF1
AEROSTAfl RANGER EXPLORER (X) BUILT 1/91 & LATER
W
4.6L EFI
TOWN CAR
Y
4.9L EH
F/E SERIES, BRONCO
F
5.0LEH
CROWN VICA3RAND MARQUIS
N
5.0L EH
F/E SERIES, BRONCO
X
E
5.0LHO
MARK VII, MUSTANG
X
T
5.0LHO
T-BIRD/COUGAR
H
5.8LEH
F/E-SERIES, BRONCO
J
7.0LEH
F-SERIES
G
7.5LEH
F/E-SERIES
-
.
DO NOT CLEAN THROTTLE BOOY
DO H£H CLEAN IABP SOLENOIO
-
USE SERVICE KTT 9F939
USE SERVICE PROCEDURE 2:
DO NOT CLEAN THROTTLE BOOY,
CLEAN IABP SOLENOID ONLY
X
X
X
.
.
(X) BUILT BEFORE 1/91
X
-
X
X
-
X
x b!
X tJ
X
X
.
a/
x a/
-
NOTE: bJ SERVICE KIT NOT APPLICABLE DO NOT CLEAN EITHER THROTTLE BOOY OR IABP SOLENOID FOR CALIBRATIONS; 1 64E-R10, 1-64H-R10, 1-64J-R10
1 64K-R10, 1 64M-R10, 1-64P R10.1-64R-R10, 1-75A-ROO, 1-76A-ROO, 1 76B-R00 AND 1-76C-ROO. SERVICE KIT NOT APPLICABLE USE SERVICE
PROCEDURE 2 TO CLEAN IABP SOLENOID ONLY FOR ALL OTHER CALIBRATIONS.
& SERVICE KIT NOT APPLICABLE, USE SERVICE PROCEDURE 2 TO CLEAN IABP SOLENOID ONLY FOR CALIBRATIONS; 1-97A-R00.1-98A-ROO, 1-988-ROO
1-98C-R00, 1-98E-R00 AND 1-98F-ROO. USE SERVICE KIT -9F939- AND SERVICE PROCEDURE 2 TO CLEAN IABP SOLENOID ONLY FOR ALL OTHER
CALIBRATIONS.
-
-
-
-
.
Figure
11
-
Article
1992 MODEL YEAR
—
THROTTLE BOOT AND IDLE AIR BYPASS SOLENOID SERVICE PROCEDURE APPLICATION CHART
- -
SERVICE KTT NOT APPLICABLE
USE SERVICE WT 9F939
SERVICE KIT NOT APPLICABLE
USE SERVICE PROCEDURE 2: CLEANNG PROCEDURES NOT ALLOWED
USE SERVICE PROCEDURE 2:
DO MQI CLEAN THROTTLE BOOY,
DO NOT CLEAN THROTTLE BOOV.
DO fsQI CLEAN THROTTLE BOOY,
CLEAN IABP SOLENOID ONLY
DO NOT CLEAN 1ABP SOLENOID
CLEAN IABP SOLENOID ONLY
-
ENGINE
VIN
ENGINE
7
J
1.9L EF1
ESCORT/TRACER
X
s*
2.3LHSC
TEMPO/TOPAZ
.
X
AM
2.31. EFI
RANGER MUSTANG
T
2.9LEF1
RANGER
U
3.0LEF1
TAURUS/SABLE, AERO/RANGER
91
-
25
APPLICATION
.
X
X
PROBE
X
X
.
-
4
3.8L EFI
T BIRD/COUGAR CONTINENTAL
TAURUS/SABLE
i£ "
x
3.8LSC
T BIRD
4.0LEF1
AEROSTAR, RANGER, EXPLORER
w
4.6LEF1
CROWN VIC/GRAND MARQUIS
TOWN CAR
Y
4.9LEF1
F/E-SERIES, BRONCO
N
5.0LEFI
F/E SERIES, BRONCO
X
E
5.0LHO
MARK VII, MUSTANG
X
T
5.0LHO
T-BIRD/COUGAR
X
H
5.8LEF1
F/E-SERIES, BRONCO
X
J
7.0LEF1
F-SERIES
X
G
7.5LEF1
F/E-SERIES
X
X
X
-
-
X
X
X
X
X
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