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post #1 of (permalink) Old 02-13-2007, 12:20 PM Thread Starter
tcl2665
 
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Hard Start When Cold

Can anyone explain to me the details of how the glow plug relay(s) work. I have been having trouble starting the truck in cold weather, and after checking the power and grounds on both relays on top of the engine I am not sure exactly what I am supposed to be seeing. I need to know how to test the 2 relays on top of the engine.

Please explain to me when the relays are supposed to be energized, deenergized ect. What wires are hot in which key positions etc.

I just replaced both batteries. The glow plug light comes on, goes out and then I start the truck. The engine will start and die 2 or 3 times. Then it will finally stay started but will shake violently and make horrible noises. It is fine after warming up.
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