What should exhaust temps be when running Regen?
When running a regen you need to open up data monitor and watch all the exhaust temps and doser injector state. Once a regen is initiated the DOC inlet and DPF inlet need to reach about 525 -550 degrees. This is actually done by the turbo vanes closing, causing high exhaust back pressure and load on the engine.
What does Hg low mean on a Cummins ISX?
Exhaust gas pressure – 120-150″ Hg – Low could indicate a failing turbo. Intake manifold pressure – 10-14″ Hg – Low could indicate boost or air to air leaks. Percent load – less than 2% (with the fan off) I’ve seen most regens fail with this at 5% or higher.
What are the problems with a 2009 Cummins ISX?
The truck is doing the exact same thing, it doesn’t run any better or any worse than it did BEFORE I brought it in. Thanks for the info. 111 – coolant, 131 is a short in the accelerator, 27 seems to be an actuator issue with the VGT turbo, 384 I can’t find, and 131 comes back to an issue for the EGR pressure sensor.
When to close the EGR valve on a Cummins ISX?
If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values; EGR valve position – 0% – EGR valve must be closed.
What should the Doc inlet be for a Regen?
When running a regen you need to open up data monitor and watch all the exhaust temps and doser injector state. Once a regen is initiated the DOC inlet and DPF inlet need to reach about 525 -550 degrees.
What should the Regen temps be on a Cummins Engine?
Intake manifold pressure – 10-14″ Hg – Low could indicate boost or air to air leaks. Percent load – less than 2% (with the fan off) I’ve seen most regens fail with this at 5% or higher. This is also what is near 0% with a cold engine and 5-7% with a hot engine. Typically a weak metering actuator, the engine heat makes the actuator weak.