Headlights dimming and then going bright again

[fmff21]

the drop on your volt meter is normal

[deacro]

Originally Posted by 8secondride

no i have not. i just assume theyre fine because it turns over just fine. just doesnt fire. the other day i had to crank it pry atleast 5 or 6 times, about 3-5 secs each time. and when it did finally fire i was thinkin there would be smoke but nothin. just ran like nothin happened. maybe a fuel deliv. issue? idk...

I had the same problem loose transfer pump line had to get her towed, dealer fix her up i had no time to do it my self, 3hr for them to find the problem air getting in line.

[8secondride]

wheres that line at deacro?

[deacro]

Originally Posted by 8secondride

wheres that line at deacro?

Check and make sure all the lines of the injector pump transfer lines are tight all lines going to injectors are tight don't remember torque spec.

[dillyw]

I got the p2509 code from 1 dead battery. Replaced both no more code and no issues cranking the motor

[jeffc]

As a newb, I would like to throw my thanks out there as well. FWIW, my Predator seems to really amplify the issue. I'll guess that it has something to do with the extra fuel pressure.

[Dezert Diesel]

So I take it this would affect the interior lighting as well when the grid heaters are cycling? Nice to know my new truck isn't messed up thanks Cummins Forum

[6 pack]

Why do people spend all this money and build crazy PVC contraptions to have a "cold air intake" if your grid heater is just going to warm the air back up??

[mstoaks]

because in place like where you live they are not needed and can be deleted, now up north where temps are typically below 0* they play a big role. spent $10.00 on this crazy pvc contraption. and 50 for a filter. better the $400

[BigC2007]

And the heater does not stay on all the time it cycles til the water gets to a certain temp and stops.

[peckens]

it does mention this in the owners manual btw

[8secondride]

Originally Posted by 6 pack

Why do people spend all this money and build crazy PVC contraptions to have a "cold air intake" if your grid heater is just going to warm the air back up??

the grid heater doesnt cycle when the engine is at normal operating temps.

and people make home made cold air intakes because most of the big name "cold air" intakes actually perform worse than your OEM airbox. they allow for a greater volume of air yes, but that air is so much hotter because youre now sucking it straight out of the engine compartment. people argue that its unnecessary but its just common sense: a greater volume of cool air is much better for your engine than a greater volume of hot air. im running a banks TRUE cai w/ the scoop. the only air that goes into my turbo is cool air from outside the engine compartment.

even if the grid heater did cycle all the time, its not the only thing working against cooler intake temperatures. the turbo heats the air because its hot from the exhaust gases, and the compression of the air causes heat. then youve got all your plumbing wrapped around your hot engine block. so yeah no matter what the air thats going into your manifold is not by any means going to be COLD. but the lower you can get the temp. of that air at the beginning, the lower its going to be at the end.