Low Voltage after cold start up [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Low Voltage after cold start up


JohnnyO
11-14-2003, 06:11 PM
I am a first time diesel owner so am not sure the reason for this?


Now that it is cold where I live, I wait for the "wait to start" light to go out, then I start the engine. I then notice the voltmeter stays around 12 volts for about 10 seconds and that the head lights are dim during this time. The voltmeter then jumps up to 14 volts and the head lights are bright.


To me this signifies there is a big current draw during this time. Is it that the glow plugs stay on until a predetermined cylinder temperature?

Mackin
11-14-2003, 06:19 PM
Completly normal fuel filter heater and replenish glow plug draw from start up ....

Mac

gsxr1216
11-14-2003, 06:50 PM
normal stuff, i posted the same thing a few weeks ago and everyone s does it (at least those in cold climates...)