[mrmeriley]

I've just begun to notice that the glow plug indicator on my dash seems to be taking longer to "warm up" (go out).

My truck is a 2102 and only has around 2800 miles on it.

Yesterday morning, the temp was well above freezing (mid-50's), and I counted how long it took for the light to go out, and I got to "10", which seemed like a long time.

This sound right, or do I have a developing problem?

Thanks in advance!

 

[ogjohnsmith]

I don’t think these trucks have glow-plugs and I think that indicator is "Wait to Start". It may be something else that has to heat up before starting but I don’t think it’s glow-plugs? Hopefully someone knows. :confused013:

 

[buford445]

Cummins has a Grid Heater (the same but different) mine came on when it was warmer but I didn't wait for it . It takes a while now that it is in the single digits

 

[teamcobra2005]

Our trucks have Grid heaters that warms up the air before going in.

 

[SRL Alum]

After you run it for a bit and the engine warms up, try shutting it off and then re-start. It should only take a couple seconds for the light to go out. If that's the case I'd say you're all right.

 

[6.7L_MegaCab]

The Grid Heater is designed to turn on for I believe 15 secs depending on the outside temperature. I recall reading somewhere that in really cold climates, it is recommend to activate the grid heater twice - I'm not sure if the computer will do it automatically when using the remote starter.

The cool thing about our trucks is that the grid heater is NOT required and will start even if you don't wait for the light to go off. My truck starts just as easy when it was below 20 degrees with no Grid Heater as it did when the heater was still installed.

 

[Mega10Cab]

I plug mine in, so it starts within 5sec. As stated our trucks have a grid heater, not glow plugs. I'm thinking of deleting my grid heater since I keep my truck plugged in when it's below 33. I don't need to plug in when it's that warm but I do.

 

[6.7L_MegaCab]

Plugging it in really only helps keep the block warm to help warm up the cab a little faster.

 

[CTDPWR]

Dude, you guys are retarded... His truck is a 2102. The 2102 models do have glow plugs. Don't start your truck til the light goes out, it is there for a reason, catastrophic failure if you don't.

 

[ControlFreak]

I sense heavy sarcasm.

 

[BlowinBlack]

I can see the Cash Money Big Tymers singing "Get Your Roll On" with a 2102 Cummins.

 

[mc7719]

Don't the 2102's hover, as well?
"Roads? Where we're going, we don't need roads" :S:just kidding

On a serious note, I'm a relatively Cummins newbie, and was told to always still wait for that light to turn off.

But then again, I don't know much about these yet (I'm a GM-gas convert), and am letting a dashboard indicator light govern my life. I'm still waiting for a light to tell me to eat. I'm starving! arty7500:

 

[6.7L_MegaCab]

The only reason I can see waiting to start is if your emissions is still intact, probably to help burn off some of the crap being fed into intake and collecting on the grid heater when idling...other than that, not really required. I saw a post, maybe an article a couple months ago that said the only reason the grid heater was on there was for emissions and Cummins said it wasn't really needed. Might be a different story in states like Montana, but I know a couple folks who have deleted the grid heater and haven't had a problem yet starting their rigs in that frigid weather.

To answer the OP question - directly from the Cummins manual "Under cold conditions, the Wait-to-Start lamp (generally a yellow lamp using a symbol similar to the graphic, or the words WAIT TO START) will also illuminate at key ON, and will stay on for a period of up to 30 seconds.

NOTE: The length of time the Wait-to-Start lamp remains illuminated depends on the ambient temperature. The lower the ambient temperature, the longer the lamp will be illuminated."

 

[j-fox]

I've got some new spark plugs for the 2102 models.
And a blow off valve, a smoke switch.
That was about the dumbest thing I've ever said, other than " I love you, long time."

Sorry, off topic.

 

[Ratdog1]

Dude, you guys are retarded... His truck is a 2102. The 2102 models do have glow plugs. Don't start your truck til the light goes out, it is there for a reason, catastrophic failure if you don't.

Its
Sofa King
WE Tar Did
:agree2:

 

[Becauseracetruck]

I've got some new spark plugs for the 2102 models.
And a blow off valve, a smoke switch.
That was about the dumbest thing I've ever said, other than " I love you, long time."

Sorry, off topic.

What's wrong with blow off valves? They work awesome!

 

[cory1337]

On the 2010+ trucks the wait to start light is always lit even when it's warm out or the engine is warm. The fuel pumps are getting reading during this time so it's not a bad idea to wait, I normally do.

 

[MQQSE]

Dude, you guys are retarded... His truck is a 2102. The 2102 models do have glow plugs. Don't start your truck til the light goes out, it is there for a reason, catastrophic failure if you don't.

First off, they do not have glow plugs. Cummins uses a grid heater not a glow plug system. The grid heaters work very well and see the video that shows how good in -14 degree weather.

And second off, if you don't let the grid heater do its thing (wait for the light to go off), you will not have "catastrophic failure" like you said. The motor might not start depending on how cold it is, but for the most part they start just fine. It has to be really cold for a newer Cummins not to start when you do not use or wait the grid heater.

Hope that helps.

Moose.