Help, Dragon not running

[crashnbash]

I have d-8 that ran good until the other day. It just died, had spark, and no signs of engine failure. I then unplugged the pc-5 and hooked the ecu up without it, it now starts, but only ran right for a very short time. Now acts like it is limp mode with no warning lights coming on and no codes in the computer. Anybody seen this or have any ideas?

 

[crashnbash]

found problem, now waiting on new ecu.

 

[thefullmonte]

That's a bummer. Do you know what caused the failure.

 

[rs1]

my 09 d8 350 miles on it 60 miles on update stalled today after half a mile started got it home idles about 1100 rpm but will rev up to get it on the trailer. had the latest flash monday. does this sound like a vr problem?

 

[skibreeze]

my 09 d8 350 miles on it 60 miles on update stalled today after half a mile started got it home idles about 1100 rpm but will rev up to get it on the trailer. had the latest flash monday. does this sound like a vr problem?

What do your plugs look like? If they are lean, I'd pull the ex. valves to look at the pistons.

 

[rs1]

plugs are brown look like good coloring never seen any det light or anything else
just started acting up. goes to the dealer on tues . might pull ex valves and have a look.

 

[scarter]

found problem, now waiting on new ecu.

What did you find was the problem? Did the voltage regulator go out and take the ECU with it?

 

[crashnbash]

The power source for the full load injectors coming out of the ecu is what powers the pcv I believe, and the circuit inside the ecu failed not allowing the pcv or the injectors enough power to operate properly. My bet is the vr failed and sent a voltage spike and burned up the ecu. Hopefully it didn't take out the pcv too. Won't know that till my new parts come in.