Mazda 3 2005 1.6l.
patulong naman po regarding my car. start up rpm is normal, pag nareach na normal operating temp. ng vehicle rpm fluctuates (w/ load gear in D and a/c on) pero hindi siya namamatay. pag walang load (gear in N & a/c off) rpm surges to more or less 2000. if you try to rev the engine to about 3k to 4k the rpm goes down but not below 2500. if you try to rev up to 6k and release the accelerator pedal it goes down to normal idling (but not always), otherwise rpm fluctuates again. I've already changed MAF sensor, IAC valve, and already cleaned throttle body but the problem still persist. patulong naman po, ayaw kung dalhin sa dealer kasi diagnosing pa lang mahal na...