Hi Folks,
I've recently purchased (3 months ago) a 2003 Toyota commercial vehiclewhich runs with a 4.2 litre Land Cruiser diesel engine, and it has me pulling my hair out at the moment, hence why I'm here. Although not strictly a Land Cruiser, the engine/electrics are the same, and this is where the problem lies.
The engine management light comes on intermittently (normally at lowrevs/speed), and the engine goes in to limp mode. It happens quite randomly, and when it does, turning off and on again resets the ecu and we're off as normal.....until the next time it happens, could be 5 minutes, could be 5 days.
We had oil/fuel filters changed and service done, all the basics before the expensive stuff.
Took it to a diagnostics specialist who could only diagnose when the light was on, as it wasn't storing the fault, finally it happened and although I wasn't present at the time to see the fault code, he mentioned something to do with 'Throttle Idle Sensor' and perhaps the 'Potentiometer'.
There is a simple brake switch under the throttle pedal which controls the exhaust brake when the pedal is not pressed, and you can't buy this separately from Toyota, had to buy the entire new Throttle assembly from Toyota @ £440 + fitting which I was assured would solve the problem.
Two days later and the problem has presented itself once again, 15 minutes after startup, going in to limp mode and unsure where to go from here?
Readyfor just driving it in to the sea (not sure whether I'll get out itor not after this!).
A crate of beer to whomever can help me solve this, 3 months of to-ing and fro-ing to so-called specialists has me ready to give up and take a massive hit on the vehicle.
I've recently purchased (3 months ago) a 2003 Toyota commercial vehiclewhich runs with a 4.2 litre Land Cruiser diesel engine, and it has me pulling my hair out at the moment, hence why I'm here. Although not strictly a Land Cruiser, the engine/electrics are the same, and this is where the problem lies.
The engine management light comes on intermittently (normally at lowrevs/speed), and the engine goes in to limp mode. It happens quite randomly, and when it does, turning off and on again resets the ecu and we're off as normal.....until the next time it happens, could be 5 minutes, could be 5 days.
We had oil/fuel filters changed and service done, all the basics before the expensive stuff.
Took it to a diagnostics specialist who could only diagnose when the light was on, as it wasn't storing the fault, finally it happened and although I wasn't present at the time to see the fault code, he mentioned something to do with 'Throttle Idle Sensor' and perhaps the 'Potentiometer'.
There is a simple brake switch under the throttle pedal which controls the exhaust brake when the pedal is not pressed, and you can't buy this separately from Toyota, had to buy the entire new Throttle assembly from Toyota @ £440 + fitting which I was assured would solve the problem.
Two days later and the problem has presented itself once again, 15 minutes after startup, going in to limp mode and unsure where to go from here?
Readyfor just driving it in to the sea (not sure whether I'll get out itor not after this!).
A crate of beer to whomever can help me solve this, 3 months of to-ing and fro-ing to so-called specialists has me ready to give up and take a massive hit on the vehicle.
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