Need a little help. I have a 98 dt466e that when it warms up it drop 1 2 and 3 cylinders. Only does it after running 15-20 minutes. Already replaced IDM , Oil pump and fuel pressure is aound 50 psi. Only does it once it heats up. Oh and it all started at once. Any ideas.
Thanks
Dt466e dropping cylinders
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Fznh2o, Jan 24, 2020.
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You need to figure out which one it drop first and go from there, probably wiring issue to that injector or the injector itself.
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Probably a shorted injector coil that needs a certain temp to fail at. ECM cannot pinpoint which one, so kills the bank, (1, 2 and 3).
hatchhero, spsauerland, pushbroom and 1 other person Thank this. -
You need to have a scanner hook up and monitor diagnostic code at the time of drop off. It will show which injector first than will shows all three. That why you will know which one the replace.
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One thing you can do is measure injector coils resistance when engine is cold. (I would measure all injector at valve cover). And again when at operating temp. or when injector dropping. If any injector is measuring more than that you need to inspect injector harness under valve cover and measure injector directly.
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