TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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SFGE/SFI System 2JZ-GE34 / 71
p.035
Dashpot — MK4 Supra SFI System 2JZ-GE, page 34
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EG–220 ENGINE – SFI SYSTEM (2JZ–GE) Dashpot 1. WARM UP ENGINE Allow the engine to warm up to normal operating temperature. 2. CHECK IDLE SPEED Idle speed (Transmission in neutral position): 700 ± 50 rpm Dashpot Adjusting Screw 3. CHECK AND ADJUST DASHPOT SETTING SPEED (a) Disconnect the control cables from the throttle body. (b) Push the dashpot push rod all the way with a screwdriver. (c) Check that the dashpot is set. Dashpot setting speed: M/T 2,600 ± 400 A/T 1,800 ± 400 rpm (d) Adjust the dashpot setting speed by turning the dashpot adjusting screw. (e) Reconnect the control cables to the throttle body. 4. CHECK VTV OPERATION (a) Maintain the engine speed at 3,500 rpm. (b) Release the throttle valve, and check that the engine returns to idle in a few seconds. P12070 Throttle Opener 1. WARM UP ENGINE Allow the engine to warm up to normal operating temperature. 2. CHECK IDLE SPEED Idle speed (Transmission in neutral position): 700 ± 50 rpm 3. CHECK THROTTLE OPENER SETTING SPEED (a) Disconnect the throttle opener vacuum hose from the throttle body, and plug the throttle body port. (b) Maintain the engine speed at 2,500 rpm. (c) Release the throttle valve. (d) Check that the throttle opener is set. Throttle opener setting speed: 1,500 ± 400 rpm If the throttle opener setting speed is not as specified, replace the throttle body. (e) Reconnect the throttle opener vacuum hose to the throttle body. Disconnect Plug P11973