When I start up my 2008 dodge 2500 I can hear a solenoid/switch clicking in and out for the first 3 minutes. When it clicks, I've noticed the alt gauge goes way down like the alternator isn't charging. When it clicks back again the alternator starts to charge again. After the first 3 minutes this stops and everything is fine.

Is this normal procedure or is there a switch or something ready to quit?

Thanks for you help!!!

89,000 miles
6.7 2500

 

normal......your heater is cycling....i take it you have never owned a diesel before...???

 

yeah, those intake grid heaters draw some amps!

 

yep totally normal as soon as you warm the truck up a little and the heaters stop cycling your gauges and alternator should work normal

 

Thank you for your fast replies. This is my first diesel vehicle. I've operated trucks, tractors and other heavy equipment but don't ever remember an intake heater like this.

Thanks!!