My 2002 Mazda 323 has been stalling alot, the RPM when in idle sometimes races to 2000 then drops down almost to zero when it does this the car cuts off and I have to restart it, it also does this while I'm driving, it sometimes struggles to build speed and if I push the acceleration all the way the RPM goes up but it does not build speed also I hear an audible noise that sounds like it's coming from the engine. It has been doing this almost two weeks now and I carried the car for a service, I changed the plugs, serviced the throttle, injectors, even changed the IAC sensor but still no luck. I changed my oil and air filters about two months ago and haven't done much milage since then. Also I've noticed that the engine check light doesn't come on anymore when then ignition is turned, I know it's suppose to come on and cut off but it doesn't do that anymore. Any suggestions, I've already spent so much on the car and no one can tell me what's wrong with it.

 

Don't worry I figured it out, it was my coil packs