2009 Prado diesel(auto) running fine but in past month problem of intermittent stalling when idlying. Only occurs intermittently and after a reasonable run and engine is heated up - pull up at lights and whilst idlying will simply stall. Vehicle will restart without fuss and then drives ok for days/week before the problem recurs under the same circumstances described. Fuel filters and accelerator pedal replaced but problem remains?? Nothing evident when dealer uses diagnostic equipment on vehicle and unfortunately the problem has not occured when they road test with diagnostic equipment?? A sensor or something?? Going around in circles and driving me crazy!!
SOUNDS LIKE THE FIRST STAGES OF AN ELECTRIC FUEL PUMP FAILING. THEY ARE NOTORIOUS FOR THESE TYPES OF SYMPTOMS. THE LOW PRESSURE AT THE TRAFFIC LIGHT RESULTS IN THE STALL, BUT AS LONG AS ITS UNDER DEMAND IT WILL FUNCTION OK UNTIL IT QQUITS. HAVE A PRESSURE CHECK DONE ON THE FUEL PUMP
My 2009 Prado has been doing the same thing, under load it is ok, but as soon as you back off, the engine cuts out. I've taken it back to toyota but because their is not fault code showing they say they cannot find the problem. This problem has got worse so we took it back to toyota and a fault code was showing a fuel issue (dropping in pressure) but now they say that the drop in feul pressure won't cause the car to do what it is doing, but from the research I've done this is the problem. I've told them that I will not except the car back because it's unsafe to drive, they are not impressed but the last time it stalled my wife was on the freeway in the right hand lane doing 110kms with all my kids in it, she was lucky this time and I refuse to except the car back until they fix the problem. I'd like to here more on this, It's starting to do my head in
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SOURCE: My vehicle runs well on high speeds. But,
I think your looking at a fuel line problem. I'd check the filter first if you have an inline filter on your car. If thats not it, check filter on fuel pump and fuel pump is operating as it is supposed to. sounds like you probably have a partial blockage in your line and when the fuel it flowing faster it doesn't effect it as much. I'm thinking fuel filter and you probably have 1 inline on that vehicle.
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John, I have the exact same problem with a 2008 prado diesel. Please can you tell me if you have found the problem, was it the fuel pump?
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