Shortly after starting my truck the lights dim and brighten for a minute or so. Is the air heater coil causing that? It also makes a click each time they dim or brighten, as if a relay was engaging / disengaging.<br><br>Thanks in advance.

 

My SO does the same thing, very annoying. I think its a fan or something that is drawing some major current to make the truck do that. Mine only does it when I first start it up and goes for about 5 minutes. ???

 

I think it is the manifold air heaters cycling on and off.
Check page 184 of the owners manual.
yes I actualy read the whole thing.

 

mine does the same thing.must be normal

 

It is the manifold heaters cycling on and off. They draw a huge amount of power. You get used to it.

My hat goes off to &quot;driver&quot; who actually read the manual. ;D

Casey

 

Totaly Normal.
And probably the most asked question I've seen on any Dodge Diesel website. ;D
Kinda spooky if you're not expecting it huh?

 

Yeah, that's normal for the lights to dim and to hear the clicking noise. However, if you go ahead and start driving down the road, the grid heaters will quit cycling once the vehicle reaches 20mph (I read the manual, too). That will end all of the dimming and clicking.

 

[quote author=Shovelhead link=board=20;threadid=11447;start=0#108805 date=1046174783]<br>Totaly Normal.<br>And probably the most asked question I've seen on any Dodge Diesel website. ;D<br>Kinda spooky if you're not expecting it huh? <br>[/quote]<br><br>Wait till spring/summer gets here and everyone starts asking why there is a &quot;chirp&quot; as the enginge shuts down.<br><br>That was the most asked question when I got mine.<br><br>phox

 

You're right Phox ;D<br>That and the ever present Saturday morning &quot;HEEEEEELP, I just changed my fuel filter.............&quot;<br>That should be a &quot;Sticky&quot; Topic somewhere during the warmer months.

 

I don't have to wait until Spring to hear the chirp. It does it now. I also read my owners manual which states that it is also a normal noise.

 

[quote author=Jonesey link=board=20;threadid=11447;start=0#109020 date=1046209110]<br>I don't have to wait until Spring to hear the chirp. It does it now. I also read my owners manual which states that it is also normal.<br>[/quote]<br><br>Congratulations.........you just became the newest member of the RTFB club. ;D<br>We'll teach you the secret handshake later. <br>There's alot of info in them thar books, ain't it?<br>Now it's time to put that to good use helpin' out when questions arise.<br>&quot;We Are Family&quot;....&quot;Talkin' 'Bout My Diesel, and Me&quot;..... <br>Glad there's no sound here.

 

Warm down here - - no chirp. I heard the chirp was on the older ones with the small belt.

 

I have just started getting the chirp. It just shows that you are driving a CUMMINS

 

I too am new to these diesels and just got mine 3 days ago. Tonight I pulled into the garage after work and noticed a chirp when I shut her down. Opened the hood and looked but saw nothin', then I noticed the neighbors cat under the front wheel.

 

Sorry but after you change the fuel filter on the 03`s the so called lift pump will prime the system so no more HELP I changed my fuel filter now my truck won`t start. :'( ;D