i just got home and turned off my car expecting it to stay on for a minute because of the turbo timer but the car just shut right off. Its on the same setting its been on and its def all hooked up right and everything. the car ran good and the turbo timer worked all day. I cant figure out why it would do this. i tried starting the car and shutting it off to see if it would work but to no avial. please help. thanks

 

I had the same problem make sure your ground is well grounded.

on a side note i never fixed mine. it might have just crapped out. i turned it off and there it sits LOL

 

this might sound rediculous, but was the parking brake up? Done that a time or two myself.
If that isnt it, disconnect power from the timer for a few seconds, then re-connect and see it works. Might just need a hard reset.