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Re: 2007 Isuzu NQR 5.2L / Glow Plug Operation
Posted to HD/Fleet Forum on 10/10/2012

Controller is on a bracket bolted to the oil cooler right under the fuel rail. ECT needs to be under 50 deg F for system operation. Your light flash < 1 sec is simply a bulb check.

Have you pulled the buss bar to test each gp individually? They all need to b... Login to read more.