92 mazda mx3 kdle swap woes

92kldemx3

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92 mazda mx3 gs v6
so i dont know where else to post this, i apologize for the improper area in advance. (hard to navigate this site!)

i have a 92 mazda mx3 gs, v6 5 speed. the 1.8 was tired and had blow by, but ran great.

swapped in a klde that we fully rebuilt from the ground up.
new parts include: 2.5 long block, k8 intake mani, TB, injectors, k8 ecu, harness etc. new k8 dizzy, plugs, wires, MAF etc. 2.5 crank sensor and knock sensor, ebay headers, 2.25" exh, no cat etc.

it will start and run fine for about 30 sec to 1 min, die, sit for a random period of time from 1-30 min, restart ( up to 4 times ) and then once its got some temperature under it, run great and fine. ran rich with the 2.5 injectors so swapped back the 1.8 inj and no change.

have new o2 sensors to put in, havent checked the crank sensor yet, or the coolant temp sensor. all gauges work fine when it finally runs after the multiple starts.

once it runs its a ***** ape, tons of torque, crappy fuel mileage but no problems restarting while warm.

need to swap the o2 sensors in, check the couple sensors and past that, im at a loss.

what would cause this thing to start, die multiple times, then run fine after getting some temperature into it?
.
im thinking a combo of shot o2s, bad coolant temp sensor (ecu signal) and/or bad crank sensor.

once it decides to not start after dying, it will not register a crank signal on the tach, and loses spark during that time as well. spark will come back after the aforementioned time periods and it runs fine for a couple starts then fine after warming up.

would really appreciate some help, did alot of google searching and this is the step im at. any help would be appreciated!

Henry
 
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