2012 6.7 cummins - Competition Diesel.Com

Derekveneman · 01-23-2016, 11:35 PM

Any one having any electrical issues? First start up of the day it will make the cab lights flicker. the rpms are also fluctuating for a couple seconds as i start her up. it scares me. could it be faulty injectors?

Leibertd · 01-23-2016, 11:38 PM

Grid heater cycling on and off causes that.

Derekveneman · 01-23-2016, 11:42 PM

Even the flux in RPMs for the first seconds?

Leibertd · 01-24-2016, 02:31 AM

How many rpm is it fluctuating?

Leibertd · 01-24-2016, 02:35 AM

Reason I ask is mine does fluctuates with the cycling of the grid heater. As in the heater kicks in, battery voltage drops slightly due to the load of the heater, lights all flicker momentarily rpms drop slightly and everything returns to normal once the heater kicks off. Repeat sequence until temp sensor is satisfied and grid heater stops cycling.

madmikeismad · 01-24-2016, 03:47 AM

grid heaters will be a steady cycle, for a few seconds at a time. If stuff is flickering, I don't think it's the grid.

Leibertd · 01-24-2016, 04:25 AM

By flickering I mean dim and then come back to normal in sequence with the heater cycle. To the OP I think we need some more details to determine if it's the grid or an actual issue.

Derekveneman · 01-24-2016, 08:09 AM

Quote:

Originally Posted by Leibertd

Reason I ask is mine does fluctuates with the cycling of the grid heater. As in the heater kicks in, battery voltage drops slightly due to the load of the heater, lights all flicker momentarily rpms drop slightly and everything returns to normal once the heater kicks off. Repeat sequence until temp sensor is satisfied and grid heater stops cycling.

The RPMs with go to 600 then to 700 then 600 in a matter of seconds. It scares me cause I had a engine failure that looked like this a while back

Leibertd · 01-24-2016, 06:34 PM

Can you get a video of what it's doing?

Derekveneman · 01-24-2016, 09:09 PM

Quote:

Originally Posted by Leibertd

Can you get a video of what it's doing?

Yes. i will get one posted

CumminsPuller01 · 03-13-2016, 04:11 PM

It's just the grid heater doing its cycles. Mine you can see the lights dim and the engine rpms drop. When grid stops heating all is well again. Don't sound like a problem to me.

EverydayDiesel · 03-22-2016, 09:15 PM

Not sure where you are from but I just did heater grid delete and I love it. No more going through batteries and here in Texas it not something that I will worry about.

01-23-2016, 11:35 PM	#1
Derekveneman Name: Derekveneman Title: Rookie Status: Not Here Join Date: Aug 2015 Member`s Gallery Posts: 22	2012 6.7 cummins Any one having any electrical issues? First start up of the day it will make the cab lights flicker. the rpms are also fluctuating for a couple seconds as i start her up. it scares me. could it be faulty injectors?

01-24-2016, 03:47 AM	#6
madmikeismad Name: madmikeismad Title: So mad Status: Not Here Join Date: Dec 2009 Location: Newalla, OK Member`s Gallery Posts: 14,347	grid heaters will be a steady cycle, for a few seconds at a time. If stuff is flickering, I don't think it's the grid. __________________ Mike Hill

01-23-2016, 11:38 PM	#2
Leibertd Name: Leibertd Title: Green Behind the Ears Status: Not Here Join Date: Dec 2013 Member`s Gallery Posts: 39	Grid heater cycling on and off causes that.

01-23-2016, 11:42 PM	#3
Derekveneman Name: Derekveneman Title: Rookie Status: Not Here Join Date: Aug 2015 Member`s Gallery Posts: 22	Even the flux in RPMs for the first seconds?

01-24-2016, 02:31 AM	#4
Leibertd Name: Leibertd Title: Green Behind the Ears Status: Not Here Join Date: Dec 2013 Member`s Gallery Posts: 39	How many rpm is it fluctuating?

01-24-2016, 02:35 AM	#5
Leibertd Name: Leibertd Title: Green Behind the Ears Status: Not Here Join Date: Dec 2013 Member`s Gallery Posts: 39	Reason I ask is mine does fluctuates with the cycling of the grid heater. As in the heater kicks in, battery voltage drops slightly due to the load of the heater, lights all flicker momentarily rpms drop slightly and everything returns to normal once the heater kicks off. Repeat sequence until temp sensor is satisfied and grid heater stops cycling.

01-24-2016, 04:25 AM	#7
Leibertd Name: Leibertd Title: Green Behind the Ears Status: Not Here Join Date: Dec 2013 Member`s Gallery Posts: 39	By flickering I mean dim and then come back to normal in sequence with the heater cycle. To the OP I think we need some more details to determine if it's the grid or an actual issue.

01-24-2016, 06:34 PM	#9
Leibertd Name: Leibertd Title: Green Behind the Ears Status: Not Here Join Date: Dec 2013 Member`s Gallery Posts: 39	Can you get a video of what it's doing?

03-13-2016, 04:11 PM	#11
CumminsPuller01 Name: CumminsPuller01 Title: GURU Status: Not Here Join Date: Sep 2014 Location: Somerset PA Member`s Gallery Posts: 22	It's just the grid heater doing its cycles. Mine you can see the lights dim and the engine rpms drop. When grid stops heating all is well again. Don't sound like a problem to me.

03-22-2016, 09:15 PM	#12
EverydayDiesel Name: EverydayDiesel Title: I drink diesel Status: Not Here Join Date: Feb 2016 Location: $FCE2 Member`s Gallery Posts: 196	Not sure where you are from but I just did heater grid delete and I love it. No more going through batteries and here in Texas it not something that I will worry about.