Syclone V6-262 4.3L Turbo (1991)
voltage reading. TPS voltage at idle should be less than 1.0 volts (approximately 6 volts). With the engine off and the accelerator pedal depressed
to wide open throttle, the TPS voltage should read about 4.6 volts for the 4.3L (LB4) engine.
When the accelerator pedal is depressed and voltage readings are less than the previously mentioned voltage specifications, replace the pedal
assembly with a redesigned pedal assembly (P/N 15679725).
Important
Make sure during pedal assembly installation that the insulation mat does not get trapped between the pedal assembly and dash panel (Figure 1).
Refer to the 1992 Light Duty Truck Fuel and Emissions Service Manual X-9236, page 4-90, 4-91 for proper accelerator pedal removal and
installation.
2.
Retest the TPS voltage. If the voltage readings for 4.3L (LB4) vehicles are still below the specified voltages, replace the accelerator cable with a
redesigned cable (P/N 15693481).
Refer to 1992 Light Duty Truck Fuel and Emissions Service Manual X-9236, page 4-90 for proper accelerator cable removal and installation.
