My truck is a LC 100 4.2TD manufactured 10/2003 with 5spd auto gearbox.
The speedo can easily reach ~178km/h where there is a noticeable deceleration from some sort of speed governor. Fuel injection is resumed when the speedo reaches ~174km/h... then again: reaches 178, cuts, then resumes at 174. The tachometer shows ~3200 RPM, this is 1000 RPM below the fuel cut of 4200 RPM.
I have contacted the local toyota represent, and they tell me there shouldn't be any speed governor so I should have my truck checked at the local dealer... But the DTC light remains off, so I suspect there is no problem with the engine. Furthemore, it is not an intermitent problem: the speed cut is always the same
I don't know what to think. Is there any speed governor in these vehicles, or can it be programmed by software at the dealership? Otherwise I do have a problem.
Truck model is HDJ100L-GNAEZW
Engine 1HD-FTE 4.2 TD intercooled
Gearbox: 5spd auto
The speedo can easily reach ~178km/h where there is a noticeable deceleration from some sort of speed governor. Fuel injection is resumed when the speedo reaches ~174km/h... then again: reaches 178, cuts, then resumes at 174. The tachometer shows ~3200 RPM, this is 1000 RPM below the fuel cut of 4200 RPM.
I have contacted the local toyota represent, and they tell me there shouldn't be any speed governor so I should have my truck checked at the local dealer... But the DTC light remains off, so I suspect there is no problem with the engine. Furthemore, it is not an intermitent problem: the speed cut is always the same
I don't know what to think. Is there any speed governor in these vehicles, or can it be programmed by software at the dealership? Otherwise I do have a problem.
Truck model is HDJ100L-GNAEZW
Engine 1HD-FTE 4.2 TD intercooled
Gearbox: 5spd auto