Rb25 shuts off when idling

[sedy]

Hi all,

recently finished my rb25de+t conversion. Runs and drives perfectly - except after idling for about two minutes it shuts off like i have turned off the key, doesnt hesitate or run rough or blow smoke etc just turns off.

Since the problem came up i have done the following, 

regapped spark plugs

cleaned and adjusted aac valve

checked battery terminals and terminals at both fuse boxes

checked every small fuse in cabin and boot

 

extra info for you which may help, im using the following parts

stock gtst ecu

stock 25de afm

missing oxy sensor and light is on dash

 

doesnt have an immobiliser.

 

i cant think of anything that would shut it down so plain witout and issues or rough idling.

 

thanks! 

 

[GTSBoy]

The ECCS relay is getting its power pulled off.  It's probably not wired up correctly.  Once you start the engine there is supposed to be a signal out of the ECU to keep the ECU itself on. When you shut the engine off, the ECU keeps that signal on for some time after, then kills it, which kills the ECCS relay which properly kills the ECU.

[sedy]

Forgot to post that I had solved this, was literally just that I had cut the wire for the exhaust temp sensor and it was shutting off thinking its too hot.

[GTSBoy]

Oh f**k.  It's always something stupid and unexpected.

[sedy]

not wrong!