The throttle actuator control (TAC) module contains a direct current actuator motor
controlled by the ECM used to move the throttle plate (in either direction) and two throttle
position sensors to determine throttle plate position. The throttle plate is held at a 7% rest
position to a mechanical stop by a constant force return spring. This spring will hold the
throttle plate to the stop when there is no current flowing to the actuator motor. There is
another return spring, which creates constant force on the throttle plate only when the
throttle plate is moved towards the full closed position. The ECM will monitor both the
actuator motor and TP sensors for circuit faults, as well as check to make sure both
springs can return the throttle to the 7% position no matter where the throttle plate
remains.
Showing posts with label throttle plate. Show all posts
Showing posts with label throttle plate. Show all posts
Saturday, May 15, 2010
2003 Saturn L300 V6-3.0L VIN R P2119-Throttle Closed Position Performance
7:08 AM by onesecond
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0
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Labels: 0l, 2003 saturn l300, amount of time, circuit faults, dtc, ecm, parameters, plate position, rest position, return spring, Saturn, saturn l300, tac, throttle plate, throttle position sensors, tp, vin
Labels: 0l, 2003 saturn l300, amount of time, circuit faults, dtc, ecm, parameters, plate position, rest position, return spring, Saturn, saturn l300, tac, throttle plate, throttle position sensors, tp, vin
Wednesday, May 5, 2010
Water/Methanol Injection System for Chevy Cobalt SS/Iion Redline and All Ecotech Engines
11:47 PM by onesecond
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Labels: chassis, Chevrolet, chevy cobalt, chevy cobalt ss, connect one, ecotech engines, fluid reservoir, ground location, improper operation, location source, nozzle, PDF Download, ports, power source, redline, reservoirs, secure connection, solenoid, throttle plate, water methanol injection
Labels: chassis, Chevrolet, chevy cobalt, chevy cobalt ss, connect one, ecotech engines, fluid reservoir, ground location, improper operation, location source, nozzle, PDF Download, ports, power source, redline, reservoirs, secure connection, solenoid, throttle plate, water methanol injection
Solenoid Upgrade (optional)
The optional Solenoid Upgrade (#40060) is required if the nozzle is to be installed after the intake throttle plate (as shown), or the fluid reservoir is mounted higher then the nozzle. It is highly recommended for trunk-mount reservoirs.
Finger thread the two 1/8” NPT quick connect fittings into ports labeled IN and OUT on the solenoid. Tighten an additional half turn past finger tight.
The optional Solenoid Upgrade (#40060) is required if the nozzle is to be installed after the intake throttle plate (as shown), or the fluid reservoir is mounted higher then the nozzle. It is highly recommended for trunk-mount reservoirs.
Finger thread the two 1/8” NPT quick connect fittings into ports labeled IN and OUT on the solenoid. Tighten an additional half turn past finger tight.
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