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ISX demandated questions - Tony - 12-13-2023
So I have a demandated(reliable source) 2016 ISX15 CM2350. 350,000mi.
All sensors are original except:
exhaust pressure
Intake pressure (imap)
Pressure relief valve.
Besides rebuilding the fuel pump @400k what other sensors need to be replaced. I saw this talked about on a post for a mandated truck but I'm not sure what sensors aren't used for a demandated truck.
RE: ISX demandated questions - tree98 - 12-13-2023
If you replaced your IMAP and exhaust pressure sensor at the time of demandate, you should be good to go for quite a while. None of the other sensors that get replaced during an EGR tuneup are used after a demandate. Do a fuel system leakdown test every 3 months or so to keep tabs on the system, and rebuild your fuel pump at the proper intervals like you mentioned and your good to go.
RE: ISX demandated questions - Tony - 12-13-2023
(12-13-2023 )tree98 Wrote: If you replaced your IMAP and exhaust pressure sensor at the time of demandate, you should be good to go for quite a while. None of the other sensors that get replaced during an EGR tuneup are used after a demandate. Do a fuel system leakdown test every 3 months or so to keep tabs on the system, and rebuild your fuel pump at the proper intervals like you mentioned and your good to go.
Should I still replace those two about every year?
RE: ISX demandated questions - tree98 - 12-13-2023
No the engine is no longer eating its own soot so now those sensors will last much longer.
RE: ISX demandated questions - Techmech - 12-13-2023
It will be good to check the Exhaust Gas Pressure sensor once in a while with Insite
key on engine off just to see if it still shows the right value. Have to be very close to barometric pressure. Usually 30 inhg +/- . This sensor still reads the exhaust so it can get plugged. Make sure that you always buy Genuine one from cummins dealer, not aftermarket one. I even saw aftermarket ones in cummins package . Prongs inside sensor have to be brass/gold color, aftermarket ones are silver.
RE: ISX demandated questions - Tony - 12-13-2023
I wish they would crack down on the fake OEM parts... Instead of truck drivers.
What is everyone's opinion on oil change intervals. My manual says 25k -45k mi depending on fuel mileage. 45k mi seams really high but I know oils have come along way. Is doing 25k mile intervals with a demandated truck overkill?
RE: ISX demandated questions - hhow55 - 12-13-2023
(12-13-2023 )Tony Wrote: I wish they would crack down on the fake OEM parts... Instead of truck drivers.
What is everyone's opinion on oil change intervals. My manual says 25k -45k mi depending on fuel mileage. 45k mi seams really high but I know oils have come along way. Is doing 25k mile intervals with a demandated truck overkill?
I always changed mine when it would begin to turn dark..........Usually about 15-20k
RE: ISX demandated questions - Rawze - 12-13-2023
for the isx...
http://rawze.com/forums/showthread.php?tid=8894&pid=76569#pid76569