Vinny420Aturd said:

Hi I'm new to the Mitsubishi world that being said my 99 eclipse 2.0 420a 5 speed is giving me problems #1 I ran the codes it came back cam sensor I replaced that new now their are 0 codes the car will not start and idle and when it does it's terrible and back fires the timing is good I checked that and now the mpi relays are ticking and the injectors are ticking I'm at a loss at what's going on anything helps thanks

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It could be the iac valve in the throttle body, I had this happen on my 420a eclipse and my saturn ion both would stall at idle and not want to idle

if the new cam sensor isn't an OEM sensor, i would either return it to the place you bought it or at least swap it for another one.
i have seen a lot of new sensors that didn't work. the ones from autozone are cheap crap. saw 1 car where the owner tried 3 different AZ sensors, couldn't get the car to start, i threw on an old OEM sensor i had laying around and it fired right up.

i have also seen the sensor installed upside down.
plug should be pointing down.