Topaz FWD L4-140 2.3L CFI (1987)
(2)
Fuel Economy Package without air conditioning - 5-26J-R01 and 5-26J-R11.
(3)
Replaced by Processor Column - place a modification decal where a processor has been changed. Replace the "tear tag" sticker from processor
from previous location (driver side door).
(4)
Replacement processor specifications.
Processor
Idle Speed
Adaptive/"Learned"
Air
Replaced By
(12A650)
(ISC Motor
Idle Speed
Distribution
Processor
Calibration
EngineProduction
Fully Retracted)
(EEC Controlled)
plate
(12A650) (3)
1987 MTX - HO (PLUS) ENGINE
7-25C-R00
(49S/Can) Plus HO
E73Z-EA
700 RPM in Neutral
850 RPM in Neutral
Yes
E73Z-EC
7-25C-R10
(49S/Can) Plus HO
E73Z-EB
700 RPM in Neutral
850 RPM in Neutral
Yes
E73Z-EC (4)
7-25P-R00
(Calif) Plus HO
E73Z-GA
700 RPM in Neutral
850 RPM in Neutral
Yes
E73Z-GC
7-25P-R10
(Calif) Plus HO
E73Z-GB
700 RPM in Neutral
850 RPM in Neutral
Yes
E73Z-GC (4)
1987 ATX - HO (PLUS) ENGINE
7-26D-R00
(49S) Plus HO
E73Z-JA
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-JB
7-26T-R00
(Calif) Plus HO
E73Z-NA
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-NB
1987 ATX - BASE ENGINE
7-26E-R00
(49S) Base
E73Z-KA
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-KC
7-26E-R10
(49S) Base
E73Z-KB
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-KC (4)
7-26R-R00
(Calif) Base
E73Z-KA
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-KC
7-26R-R10
(Calif) Base
E73Z-KB
600 RPM in Drive
690 RPM in Drive
Yes
E73Z-KC (4)
(3)
Replaced by Processor Column - place a modification decal where a processor has been changed. Replace the "tear tag" sticker from processor
from previous location (driver side door).
(4)
Replacement processor specification.
Technical Service Bulletin # 87197
Date: 870923
Engine - High/Erratic Idle
Article No.
IDLE - ERRATIC OR HIGH - 2.3L HSC CFI -
87-19-7
DIAGNOSTIC AND SERVICE TIPS
FORD:
1985-87 TEMPO
LINCOLN-MERCURY: 1985-87 TOPAZ
ISSUE:
Erratic or high engine idle speed on 1985-87 Tempo/Topaz vehicles with 2.3L HSC CFI may be caused by incorrect setting of the throttle
stop adjusting screw (hard stop), linkage or throttle body binding, TV rod adjustment, or EEC IV processor.
ACTION:
To correct this, use the following service diagnostic procedure.
NOTE:
Before proceeding, make sure there are NO SYSTEM VACUUM LEAKS.
1.
If high idle is not present during initial check, perform EEC IV Self-Test. If Service Codes are present, refer to the Engine/Emission Diagnosis
Shop Manual, Volume H, Section 16 for instructions. For 1987 vehicles (only), if Continuous Service Code 78 appears, follow Pinpoint Test
Q-60. If condition is still present, continue to Step 2.
2.
If learned idle is above specification make sure the throttle plate is free and cruise control cable (if equipped) is not holding the throttle open.
NOTE:
Refer to the specification charts on pages 18 and 19 of this TSB for engine idle speed.