Summit L4-1597cc 1.6L DOHC (1990)
Throttle Position Sensor: Adjustments
1.
Loosen the tension of the accelerator cable.
Accelerator Cable Adjustment
2.
Connect a tachometer.
Verifying TPS Output To The Control Unit
3.
Connect a digital voltmeter between the illustrated terminals of the MPI Control Unit, without disconnecting the Control Unit from the harness.
4.
Turn ON the ignition switch (without starting the engine) and check the output voltage from the TPS.
Standard Value: 0.48-0.52 Volts
5.
If it not within specification, remove the throttle body, refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES.
Adjustment OF The TPS
6.
Loosen the TPS mounting screws and turn the TPS body, until the specified output voltage is reached.
7.
After adjustment, hold the TPS in position while tightening the mounting screws.
8.
Turn the ignition switch to the OFF position.
9.
Adjust the accelerator cable free play.
10.
Disconnect and remove the voltmeter.
11.
Disconnect the negative battery cable for at least 15 seconds. This will erase any stored trouble codes from the Control Units memory.
