problems with my car

[sly mantis]

Well I decided to take my car off the road for a few days to install a new suspension, which my car desperately needed since i had 2 blown shocks. So i installed tokico hp shocks, H&R springs, a MSP front sway bar and a AWR rear sway bar.
Then i decided that while im at it i should also install the new rims and tires, short shifter, bronzoil and twm shifter bushings that i had bought, as well as the ractive header, and msp catback exhaust as well as 2 new O2 sensors.
So everything is finally all together, but I took the car out for a drive. But almost everytime i stopped the idle would drop to zero and the battery and check engine light would flicker on, then the idle would jump back up to around 2000-2500 then come back down and do that a few times. This happened quite a few times, and i just figured it might be the ecu relearning.
But then the engine just stopped running. Oil light came on, but i figure thats cause the engine stopped. The car starts right up after and i can drive it and after a few minutes it would happen again.

Now what could cause this? i know that theres a few exhaust leaks but i dont know if that would cause this. Maybe the new O2 sensors? I dont know what would cause this to happen. So i need help so i can get my car running properly

[mazda protege 2]

if your CEL is flashing DO NOT! drive it. get a scanner and check out what it says, it could be your O2 sensors. reset your ECU by disconecting the battery and pumping the brakes

[sly mantis]

i did reset the ecu and it still does this.
Also the cel is not flashing it only comes on for a brief second before the engine revs itself back up.

[njaremka]

are your sensors "generic" splice in ones, or new oem sensors? from what i understand mazda's don't like the generic ones.

[red95_240sx]

the lights r only coming back on cuz its kinda dying, and u still have the key turned to the "on" position. it may b a vac. leak. smartest thing to do wud have been one at a time. so re move it all n test one at a time.