weigh2fast4u

4 months ago, my fuel pump left me here at work.
took a hammer, beat on the tank, it cranked up for 30 seconds and cut off....

Now,
I have gone through 3 fuel pumps, now i have a Delphi in it.

I have a NEW ICM on it with the cooling mod from SHBOX.com

heres whats throwing me off :

Car Runs like a Champ for about 10 to 20 minutes, No spitting or sputtering at all. then it decides, "hey, im hot, let me cut off"

the car just cuts off. no warning, no codes, no problems while its running.

earlier in the week, i could let it cool off for a few hours then it would crank.

this morning when i got home (night shift) it would NOT crank. I went to napa and put in a new delphi pump. and it cranks. 15 minutes later, it decides to shut off.

when i wake up this evening to come to work, it still wouldnt crank.

I have a new MSD coil coming from summit tomorrow and a Fuel pressure gauge.

I have been fighting it for a week. working 12 hours at nigth and going home staying up working on a car is taking a tole on me.

what would cause it to ust SHUT off?

Please dont feed me (theres alot of threads about this) cause Ive read them.

Im getting signals between the opti, coil and ICM.

I havent had any help to check for spark. Maybe i can get some help in the morning.

Why would a new fuel pump make it cut on, then cut back off and not crank?

(Thank God for the TRAP DOOR mod)

Injuneer

Have you actually checked it for codes? DTC 16 for the Opti doesn't turn on the SES light, but it does shut down the fuel pump and injectors. I realize you indicate the Opti signals are getting to the ICM, but the symptoms are consistent with an optical module heat soak failure.

weigh2fast4u

It ended up being a corroded high resolution on the opti harness. i tried to post a picture but the website crashed when I try to post it.