MSP idle/stall issue

[Mazda Pro]

idles normal 800 then dips to low rpms it has shut off 2x before on me my boost meter reads vac at 23 the hks bov works fine the a/f ratio reads blank only when im still. idk if this helps there is a full properly installed turbo system pipe,FMIC, etc.. i see or hear no vac leaks. i do have a code for a FPR and bank 1 sensor 2 which is downstream 02 i believe i have replaced fpr few months ago. anyways lately when i try to boost feels like it dosent want to not only the turbo but car itself general motor function o yea rad is leaking (3rd stock radiator) but that shouldent make it stall out. anything helps this is only my 2nd car so im not great but i know i few things.

 

[Gabi]

There's a sensor on the throttle body with a stepper motor that controls idle. My car had the same issues you're having during idle. That sensor was bad. The car never threw a check engine light.

 

[Mazda Pro]

that sounds more like it now that i remember when my idle droped i was trying to give it gas and no response. picking it up today so well see how it goes

 

[Mazda Pro]

alright replaced it worked then the worst thing happened went out for a drive then transmission said f-you ether rebuild sell or get sumthin new. going to nissan or vw. srry for very delayed post. anyone looking for a msp this has atleast 6k invested including a turbonetics steel ball bearing charger.

 

[IllaNoizeTV]

The weirdest thing happened to me yesterday. My car was working fine, perfectly. I just had the timing belt, water pump, alternator belt, and spark plugs changed. Then all of a sudden the idle went crazy, going up and down. When i hit the gas it just it stalled and sounded like it was gonna turn off. Then a loud POP sound came fromk the exhaust. I think there's a misfire in the engine. So im taking it tomorrow the the shop that changed all my other parts. What do you guys think it is?