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R32 GTR wants to stall out

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  • R32 GTR wants to stall out

    Hi Everyone, I have a R32 GTR and I'm having problems with the engine wanting to stall out when I push the clutch in to let the rpms drop while driving. If my rpm is over 3000 and I push the clutch in and let the rpms drop, it drops to the point where the engine almost stalls out. I noticed this the other day when I had to stop quickly. The engine is completely stock with the exception of new intake filters, and a custom exhaust. I cleaned the mass airflow sensors and it's still doing the same thing. If anyone knows what my problem could possibly be let me know. Your help would be greatly appreciated.

    Thanks
    1995 R33 Skyline GTR

    1991 R32 Skyline GTR - SOLD

  • #2
    Aftermarket BOV? Venting to atmosphere?
    Victory is on the horizon..

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    • #3
      All the lines appear to be connected, and its has the stock bov
      1995 R33 Skyline GTR

      1991 R32 Skyline GTR - SOLD

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      • #4
        Fuel pump not keeping up perhaps, have you changed the fuel filter?


        Sent from my iPhone using Tapatalk
        1989 R32 Skyline GTR SOLD!!!!

        The key to immortality is first living a life worth remembering.
        -Bruce Lee

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        • #5
          AAC? Not enough vacuum coming down to idle?
          Last edited by bellis_GTR; 06-17-2012, 05:59 PM.
          Heart rate 160, I'm goin 260, RB26 run me past you in a jiffy

          GT-R

          O O SKYLINE O O

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          • #6
            Check that TPS is on idle contact at idle. When TPS is on idle contact, one of the things ECU should do is kick rpm up to prevent engine from stalling. Sometimes TPS is faulty (bent idle, WOT contact's, incorrect voltage, etc) and needs to be replaced.
            RESPONSE MONSTER

            The most epic signature ever "epic".

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            • #7
              This ^^^
              Check the TPS voltage at idle, or key on/engine off. Should be .48, off the center wire i believe.

              Check for vacuum leaks also!!!!

              How/where does it idle once it catches itself?
              '89 GTST - SOLD
              '92 GTR
              '94 Mitsubishi Pajero 2.8TD LWB
              '12 Mazda3 Sport Skyactiv

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              • #8
                it idles at 1000 rpm, its just when I'm driving and if I put the clutch in to let the rpms drop like if i have to stop all of a sudden. it drops to where it practically stalls out then it catches itself and goes back up to 1000rpm.
                1995 R33 Skyline GTR

                1991 R32 Skyline GTR - SOLD

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                • #9
                  It doesn't do it when the engine is cold either only once it warms up
                  1995 R33 Skyline GTR

                  1991 R32 Skyline GTR - SOLD

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                  • #10
                    Engine idle rpm is higher when cold and o2 sensor is ignored up until certain coolant temp is reached.

                    Small intake airleak (check intake hose clamps, as might have undone due to vibration) or TPS. Dirty AACV is another.
                    RESPONSE MONSTER

                    The most epic signature ever "epic".

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                    • #11
                      I checked the voltage and it's reading 5.48 not .48
                      1995 R33 Skyline GTR

                      1991 R32 Skyline GTR - SOLD

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                      • #12
                        That's the signal voltage, try a different wire.


                        Sent from my iPhone using Tapatalk
                        1989 R32 Skyline GTR SOLD!!!!

                        The key to immortality is first living a life worth remembering.
                        -Bruce Lee

                        Comment


                        • #13
                          I have the same issue, still trying to find the problem after a couple months, all vacs and intake leaks are checked and no leaks, I have the TPS on closed throttle left to check

                          I am curious to see what your problem is because it is doing the exact same for me

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                          • #14
                            I cleaned my AAC Valve and I'm still having the issue, anyone have any other ideas of what it could be? I haven't been able to find any vac leaks.
                            1995 R33 Skyline GTR

                            1991 R32 Skyline GTR - SOLD

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                            • #15
                              Sorry to revive this thread, but anyone has a solution? I have the same problem too

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