Question about 1987 Mazda RX-7

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Wont rev past 4500rpm

I just bought the 1986 rx7 and i replaced the maf and throttle body postions sensor and the car will rev past 4500rpm in first gear and when idle but not the other gear, any idea what could be wrong and how to fix???

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  • azracer Feb 13, 2009

    ill check that thank u

  • Anonymous Mar 18, 2009

    i have a 93 rx7, and the car started to cut out and misfire when i rev it over 4000 Rpm, if i rev it slowly it delays the cut out.
    Does anyone know how to fix this?

  • robblais1675 Apr 30, 2009

    My 88 rx-7's engine blew i replaced it everythings back together and wont go ove 4000 rpms without cutting out.. i found a piece of a sensor and mazda cant tell me what it is...its a one red wired sensor with a small black box conncted to ground bracket WHAT SENSOR IS THIS?



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Ground everything!!!!!!!!!!!1 run a ground wire to everything.. i had a hesistation at 4000 rpms and it solved it.. i grounded out the map sensor the block the injectors the tranmission the water coolant spout everything..try it ;)

Posted on Apr 04, 2009

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I hade this proble on my 86. It may not be your same problem but check the connection plugs on your secondary injectors the heat from the engine worped the connectors preventing a tight fit so they would come loose and at about 4500 rpm the car would bog cause of lak of fuel.. or your secondary injector are bad

Posted on Feb 10, 2009


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