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  1. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I have found the coolant temp sensor... is there an air temp sensor for the K12?
  2. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    Would failure of either of those prevent it from starting?
  3. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    Got to thinking it must be temperature related, so opened the bonnet/hood and left the car in the sun all morning. Sure enough it started!! and the idle speed was good so the relearn was saved!! Not that its cold at night. Got down to about 18 C/ 65 F last night. Any ideas what that could be...
  4. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I changed the throttle body and makes no difference at all. Just will not start. What can have changed overnight. Goes from starting and running normally in the evening to nothing the next morning.
  5. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I suppose it could be an itermittent TPS/throttle body problem?
  6. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    The only way I can make it start is to disconnect the TPS.... back to square one!
  7. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I have a replacement throttle body. I am tempted to put it on, but I have no confidence it will fix it. To me its a config problem that is intermittent.
  8. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    Ran it loads yesterday and it ran normally and started normally all day. This morning will not start at all!!! Did the relearn a number of times and still will not start!! What is going on? This is frustrating the hell out of me...
  9. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    Hmm.... it was really reluctant to start this morning. It's like it has forgotten the relearn thing, but not completely. I did the relearn again and now seems fine again, but of course it's warm and easier to start... Any ideas Frank?
  10. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I kept persevering with the relearn procedure as quoted on this forum, and it gradually got better and better. Now idle is around 900 which is normal. So this reset problem was masking the fact that I fixed the original fault by replacing the fuel pump. Thanks to you Frank I fixed it.... get in!!
  11. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I have done the relearn dance shown in this forum and the idle speed is way too high around 2000rpm and fluctuates... any ideas?
  12. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    I cant find a K12 specific reset procecure. Does this look like the correct one? https://www.knowyourparts.com/technical-resources/engine/nissan-throttle-body-relearn-procedure/#:~:text=Turn%20the%20ignition%20switch%20on%20and%20wait%203%20seconds.,stops%20blinking%20and%20stays%20on.
  13. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    .... a development... the engine now runs with the TPS connected, but reving up and down as you would expect with it not connected. Maybe it's an intermittent fault and fiddling has changed it somehow. The ECU throws no error codes with the TPS connected. With it disconnected I get all the...
  14. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    Thanks for your response Frank, The pedal seems to work in that it will rev the engine when running. Is it worth just changing the pedal sensor, or is there a way to test it?
  15. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    The accelerator sensor seems to be on the same circuit, because if when I disconnect the TPS it throws error codes for bot TPS and pedal position sensor. If anyone has any ideas on this I would be eternally grateful. Cheers, Mark
  16. Mark Le Rouret

    Engine only runs with throttle position sensor disconnedted??

    My K12 1.2 will only start if I disconnect the throttle position sensor (TPS). So I replaced the throttle body (with TPS integrated) but still will not start unless the TPS connector is disconnected. Throws no error codes with TPS connected.
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