No Injector Buzz, No DTC's, No Start
 

I know there are a million No Start threads - feels like I have read them all. But still no help for me.

I had a rebuilt motor installed after a rod went thru the block. Everything great for ~1000 miles of light use. Then one day - no start. After 3 attempts, I could finally hear injector buzz at key-on, then it fired. For a week or two - same thing - had to turn key on/off a couple of times to hear buzz, then it would fire. Fired & started one time last weekend, then dead again. Now - no buzz, no start.

FICM is Swamps 58V, about 3 years old. All Injectors are new. I'm using ForScan w/generic reader. 160 rpm cranking, FICM SYNC OK, IPR 15% cranking, ICPDES 1025psi, ICP 1.63V. All FICM-Voltage PID's in spec.

Only codes related to EGR delete & P1000. Checked all grounds & voltage at FICM X3 connector - all good. FICM Voltage read directly 58V IGN ON, drops to 55V cranking.
Checked Injector harness - seems OK, all injector coils measure in spec for resistance at FICM Connectors X1 & X2.

Also tried running injector buzz test in Forscan Tool - test aborts due to "conditions for test not met"

Any suggestions at all? For some reasons, injectors are not firing with some intermittent problem. If they fire, it starts. Because I don't get the buzz at Key On, I know this can only be an electrical issue.

Thanks!

I had my FICM do that once on me, but it died while driving. Replaced FICM, still no start. Turned out that the relay for it was bad, $60 later it fired up and ran like nothin happened

Check all the grounds as well see in how motor has been out and in

It sure sounds like a bad relay to me too

Update
 

i know it's been a while but did u ever figure out your crank no start no buzz?

It was a bad FICM in the end. I wasn't expecting that, because I had replaced it previously, but with a new FICM installed it fired right up and has been fine since.