idle problem please help

[tkustron]

hey guys i am having trouble i installed a brand new gt40 crate motor and the idle was heitant and surging i corrected that by adjusting the tps to the right spec but now it stalls it will run fine for about 3 mins then it stalls any thoughts? thanks

 

[runningmole]

How much run time is on the motor? I had to keep giving my new motor gas to keep it from dying. After doing that for about 8-10 mins it was able to idle on it's own. Other than that, I dunno how to help ya out

 

[HISSIN50]

did you reset all the idle settings to stock (idle set screw, clean TPS, then check TPS)?
any codes from this. good luck. bump for ya.

 

[90mustangGT]

If everything is clean and adjusted properly, I would then check for vaccume leaks. Also, did you check timing. I would set it to 8-10* durring break in.