Tempo L4-140 2.3L HSC (1986)
Idle Speed: All Technical Service Bulletins
Vehicle - Driveability/Transmission Concerns
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DRIVEABILITY/TRANSMISSION CONCERNS - INTERMITTENT - 2.3L HSC
Article No.
87-12-13
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TRANSMISSION/DRIVEABILITY CONCERNS - INTERMITTENT - 2.3L HSC
FORD:
1985-87 TEMPO
LINCOLN-MERCURY: 1985-87 TOPAZ
ISSUE:
Intermittent driveability and transmission concerns that cannot be found with normal diagnostics (no service codes present) may be caused by
basic engine and transmission settings that are out-of-adjustment or not set to the proper specifications.
ACTION:
To correct this, be sure to check the following items:
1.
Engine timing should be 10~ BTDC. See Section 15 of the Engine/Emission Diagnosis Shop Manual, Volume H.
2.
Hard stop idle speed must be properly set. Refer to TSB 86-19-12 for 1985-86 specifications by calibration.
1987 ATX/FLC calibration setting: 600 RPM
1987 MTX calibration setting: 640 RPM
3.
For service procedure to adjust the Throttle Valve (TV) rod, refer to TSB 86-3-20.
NOTE:
When the Idle Speed Control (ISCDC) motor is connected, it is controlling "learned idle" to the specification of the calibration.
OTHER APPLICABLE ARTICLES: 86-19-12, 86-3-20
WARRANTY STATUS: "INFORMATION ONLY"
