Tempo L4-140 2.3L HSC (1986)
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With trunnion block loosened, rotate the trans-axle control lever up using one finger and a light force, 4.5N (approximately 1 pound), to
ensure that the TV control lever is against its internal idle stop. Without relaxing the force on the TV control lever, tighten the bolt on the
trunnion block to 9-14 N-m. (7-11 lb.ft.) as shown below.
^
Turn the throttle stop adjusting screw for hardstop adjustment.
^
Turn the engine "OFF".
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Reconnect the ISC connector.
^
Reconnect the air induction tube (flex tube) completely.
3.
Perform the EEC-IV Controlled Idle Learning Procedure
^
Turn the engine "ON".
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Turn all accessodes "OFF." [With the engine at normal operating temperatures and the transmission in Neutral (MTX) or Ddve (ATX), idle the
engine for 2-3 minutes.]
^
Turn the Air Conditioning "ON" (if applicable) and idle the engine for 2-3 minutes.
^
The controlled idle RPM should be within specifications with air conditioning "OFF" (see chart Exhibit 3, Page 2 of 6).
^
Place a small quantity of room temperature vulcanizing (RTV) compound in the idle screw adjusting hole of the throttle body. This space was
previously covered by the tamper resistant cap.
NOTE:
Idle speeds are controlled by EEC-IV processor and idle speed control motor. If the ISC motor system is operating properly, these speeds are
fixed and can not be changed by traditional adjustment techniques.
^
Refer to the Modification Procedure Summary (Attachment I, Page 1).
Exhibit 3 RPM Setting Procedure 1.9L CFI Engines
1.9L CFI ENGINES
HARDSTOP (THROTTLE STOP ADJUSTING SCREW) RPM SETTING PROCEDURE
NOTE:
THIS PROCEDURE IS NEW AND REPLACES ALL PRIOR PROCEDURES
REMINDER:
Battery must be disconnected for 5 minutes before proceeding
Figure 1
