Looking For Imput - Competition Diesel.Com

SlushBox · 11-12-2017, 02:27 PM

Ok guys I’m stumped and looking for input. My truck will just randomly die like the key was shut off, then come back to life. Will idle with no issues for hours with out any problems, but when I start to drive it will do it with no consistency and no engine codes.

Things I have replaced

1: TIPM
2: WIC
3: New Keys

Have went threw check grounds, Bulk Heads, and beat on Modules with no luck. Thinking I could have a bad ECM.

Thanks!

Blueboy · 11-12-2017, 05:05 PM

Pull the ECM and take it to a dealer near you, let them check it for you
before you buy another one.

SlushBox · 11-12-2017, 05:09 PM

Quote:

Originally Posted by Blueboy

Pull the ECM and take it to a dealer near you, let them check it for you
before you buy another one.

Didn’t know they could check it.
Could I swap one out to see if it works or will it not run unless vin matched?

PPUMPFUMMINS · 11-12-2017, 05:52 PM

Unless they can duplicate the concern, they won't be able to fix it, and a dealer can't just check and ecm out on a tester. Do u have any scanners ?

SlushBox · 11-12-2017, 06:01 PM

Quote:

Originally Posted by PPUMPFUMMINS

Unless they can duplicate the concern, they won't be able to fix it, and a dealer can't just check and ecm out on a tester. Do u have any scanners ?

Yes have a solus

maxwedgehead · 11-12-2017, 06:47 PM

I’ve seen a set of batteries do this.

SlushBox · 11-12-2017, 09:10 PM

Quote:

Originally Posted by maxwedgehead

I’ve seen a set of batteries do this.

I’m only running one battery. And I swapped it out even though it test good to be sure.

SlushBox · 11-12-2017, 09:12 PM

And to be more clear it does it enough I can’t drive it. So it not like a once a day thing it’s a lot.

biggy238 · 11-13-2017, 06:15 AM

Could it be grid heater related? Headlights on +Grid heater = under voltage (9Volts?)

Sent from my XT1575 using Tapatalk

SlushBox · 11-13-2017, 07:05 AM

Quote:

Originally Posted by biggy238

Could it be grid heater related? Headlights on +Grid heater = under voltage (9Volts?)

Sent from my XT1575 using Tapatalk

I don’t have a grid heater/fuel heater. It’s all tuned out and it never losses voltage. I watched the voltage on solus to ECM and ABS when it would mess up. It happens so fast that it drops to batter voltage 12.9 but right back up to 14+.

PPUMPFUMMINS · 11-13-2017, 08:33 AM

monitor vref circuit with an oscilloscope if vref drops out ecm is going offline

CorneliusRox · 11-13-2017, 08:38 AM

You don't happen to have the TC lockup shorted and as soon as you put it into gear, it kills the engine? Does it do it in reverse as well?

SlushBox · 11-13-2017, 08:41 AM

Quote:

Originally Posted by PPUMPFUMMINS

monitor vref circuit with an oscilloscope if vref drops out ecm is going offline

Don’t even know what that is lol.

arinkuddy · 11-13-2017, 08:43 AM

See this diagram for oscilloscope

Sent from my SM-G935V using Tapatalk

SlushBox · 11-13-2017, 08:44 AM

Quote:

Originally Posted by CorneliusRox

You don't happen to have the TC lockup shorted and as soon as you put it into gear, it kills the engine? Does it do it in reverse as well?

I’m running a 618 stand alone so my transmission has no communication with my ecm. Why it’s programed as a manual. But there is no consistency to it happening. Some times it will do it before I get off the gravel, sometimes 1/2mile down the road and so on. Some times I can get it to do it sitting there if I rack spool it like I were to launch it.

SlushBox · 11-13-2017, 08:48 AM

Quote:

Originally Posted by arinkuddy

See this diagram for oscilloscope

Sent from my SM-G935V using Tapatalk

Ya I don’t have one of those or know anyone who does. Can I swap out ECM with my brothers truck and see if that fixes it, or do I have to have vin flashed for it to run?

Mudn_1 · 11-13-2017, 09:40 AM

Pushed ECM PIN? It almost has to be a Wire Making a bad connection somewhere.

SlushBox · 11-13-2017, 09:53 AM

Quote:

Originally Posted by Mudn_1

Pushed ECM PIN? It almost has to be a Wire Making a bad connection somewhere.

Ya I went around the truck shaking,twisting, and pulling and could not recreate the issue unless I drove.

PPUMPFUMMINS · 11-13-2017, 10:53 AM

If u have a DVOM with a good sampling rate you could prolly catch it. VREF is a 5 volt reference voltage the ECM put out for engine sensors,( ecm makes this voltage from the 12 volts it receives from the battery) if vref spikes to 0 when the stall occurs the ecm is going offline.

PPUMPFUMMINS · 11-13-2017, 10:55 AM

Has it only been happening since it got colder?

11-12-2017, 02:27 PM	#1
SlushBox Name: SlushBox Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Saint Clair MO Member`s Gallery Posts: 107	Looking For Imput Ok guys I’m stumped and looking for input. My truck will just randomly die like the key was shut off, then come back to life. Will idle with no issues for hours with out any problems, but when I start to drive it will do it with no consistency and no engine codes. Things I have replaced 1: TIPM 2: WIC 3: New Keys Have went threw check grounds, Bulk Heads, and beat on Modules with no luck. Thinking I could have a bad ECM. Thanks!

11-12-2017, 06:47 PM	#6
maxwedgehead Name: maxwedgehead Title: Too Much Time Status: Not Here Join Date: Nov 2010 Location: West Plains, MO Member`s Gallery Posts: 850	I’ve seen a set of batteries do this. __________________ 15 Mega Cab Dually 03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71 08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc.. 2009 CCSB 6.7L

11-13-2017, 06:15 AM	#9
biggy238 Name: biggy238 Title: Too Much Time Status: Not Here Join Date: Aug 2008 Location: Just North of Wrong Member`s Gallery Posts: 10,859	Could it be grid heater related? Headlights on +Grid heater = under voltage (9Volts?) Sent from my XT1575 using Tapatalk __________________ Check out @bdmaximusworx 05.5 Campanella White TDi Jetta 5spd 45.5MPG -Little Sexy '10 Silver F250 CCLB 4X4 6.4L cummins Swapped Insta @trash.panda250

11-13-2017, 08:38 AM	#12
CorneliusRox Name: CorneliusRox Title: Seasoned Rookie Status: Not Here Join Date: Dec 2012 Location: Detroit, MI Member`s Gallery Posts: 4,154	You don't happen to have the TC lockup shorted and as soon as you put it into gear, it kills the engine? Does it do it in reverse as well? __________________ Corey - BSME '21 Tesla Model 3 Perf '22 DMax AT4 2500

11-13-2017, 08:43 AM	#14
arinkuddy Name: arinkuddy Title: Green Behind the Ears Status: Not Here Join Date: Feb 2014 Member`s Gallery Posts: 81	See this diagram for oscilloscope Sent from my SM-G935V using Tapatalk __________________ 2006 3500 QCSB SLT LoneStar - G56 - 3.73's - LT315/70R17 - Thunder 330 (62/74/14) - 50hp injectors - EFILive - S&B Intake and Horn - Fluidampr - DPS manifold

11-12-2017, 05:05 PM	#2
Blueboy Name: Blueboy Title: Too Much Time Status: Not Here Join Date: Aug 2006 Member`s Gallery Posts: 993	Pull the ECM and take it to a dealer near you, let them check it for you before you buy another one.

11-12-2017, 05:52 PM	#4
PPUMPFUMMINS Name: PPUMPFUMMINS Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Pennsylvania Member`s Gallery Posts: 128	Unless they can duplicate the concern, they won't be able to fix it, and a dealer can't just check and ecm out on a tester. Do u have any scanners ?

11-12-2017, 09:12 PM	#8
SlushBox Name: SlushBox Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Saint Clair MO Member`s Gallery Posts: 107	And to be more clear it does it enough I can’t drive it. So it not like a once a day thing it’s a lot.

11-13-2017, 08:33 AM	#11
PPUMPFUMMINS Name: PPUMPFUMMINS Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Pennsylvania Member`s Gallery Posts: 128	monitor vref circuit with an oscilloscope if vref drops out ecm is going offline

11-13-2017, 09:40 AM	#17
Mudn_1 Name: Mudn_1 Title: Sweet Home Status: Not Here Join Date: Apr 2007 Location: Trussville Member`s Gallery Posts: 5,290	Pushed ECM PIN? It almost has to be a Wire Making a bad connection somewhere. __________________ "One Up'N The Competition" https://www.facebook.com/pages/Diese...73404032829197

11-13-2017, 10:53 AM	#19
PPUMPFUMMINS Name: PPUMPFUMMINS Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Pennsylvania Member`s Gallery Posts: 128	If u have a DVOM with a good sampling rate you could prolly catch it. VREF is a 5 volt reference voltage the ECM put out for engine sensors,( ecm makes this voltage from the 12 volts it receives from the battery) if vref spikes to 0 when the stall occurs the ecm is going offline.

11-13-2017, 10:55 AM	#20
PPUMPFUMMINS Name: PPUMPFUMMINS Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Location: Pennsylvania Member`s Gallery Posts: 128	Has it only been happening since it got colder?