RPMs shoot up while driving

renettarenetta Member Posts: 1
edited February 2015 in Mazda
2005 Mazda 3 that has had the engine and transmission replaced... while driving the rpms shoot up to 6000, sounds like the car is gonna explode, as soon as I tap the brake the rpms return to normal... Neither the place that did the transmission work or the ones who did the engine can figure out the cause... any help??


  • ray80ray80 Member Posts: 1,655
    I might wonder about the throttle position sensor, can't say thats it, but I would wonder.
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