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Dodge Ram Warning Lights and Trouble Codes
320 messages, Last post on Mar 31, 2012 at 6:55 PM
You are in the Dodge Ram-2010 and older Forum.- Your Host is kcram
What is this discussion about? Dodge Ram Pickup 1500, Dodge Ram Pickup 3500, Dodge Ram Pickup 1500 SRT-10, Truck
#319 of 320 Re: alt tro? [azmike4] by bri2k00
Mar 31, 2012 (3:36 pm)
Replying to: azmike4 (Dec 30, 2011 10:48 am)
You gottabe kidding me... You bought a diesel but obviously don't know how they work... Diesels use glowplugs not spark plugs... The glow plug needs to warm up before starting e engine to prevent misfires or damage. That is what the Coil light is... You need to have the key in the on position till that light goes out before starting the truck.... Especially in cold weather...
- kcram (Mar 31, 2012 6:55 pm)
Replies to this message:
#320 of 320 Re: alt tro? [bri2k00] by kcram HOST
Mar 31, 2012 (6:55 pm)
Replying to: bri2k00 (Mar 31, 2012 3:36 pm)
The Cummins diesel in Rams does not use glow plugs. Cummins uses an electric grid heater (similar to the heating elements inside a toaster) to warm the air before entering the intake manifold. The grid heater continues to cycle for up to three minutes after the engine is started or until the truck is put in gear and driven. This cycling causes the electrical "surging" that can be observed by the voltmeter and the repetitive dimming of lights. kcram - Pickups/Wagons/Vans+Minivans Host
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