9900ix with cat code 128

Ok, where are you getting this code number from? If you are getting it from the LCD display, the information there is not always correct. The LCD does not display codes properly and should never be used for any diagnostics. If your truck has a Check, of WARN engine light on, then you need to have the code read by the proper program. In your case, Cat Electronic Technician should be used. The read out you listed, the 128 is not a code, it is an address. 128 simply means the engine. Those codes are displayed in SAE format. The engine gives out the code in actual CAT fault code number which is different from the SAE format. Many times errors pop up in translation.

 

What program are you using to connect to the ECM?

 

If you are not getting a check engine light, then the engine is not logging a code. You are probably looking at fuel problem, weak pump, fuel line restriction, sucking some air, something like that.

 

Ok, I understand you are frustrated. I am trying to help, but you are not really giving me the information I need to properly help you. I asked you where are you getting that code number from, and you haven't answered me that. You also never said if the yellow "WARN" or "CHECK" engine light is coming on when this happens.
I went through my stuff, plus went through google and did a search for C15 fault codes. There is actually lots of information out there. Nowhere did I find a code of 054, 03 or anything like that!!!

Answer me this;
1)- Where are you getting the code number from?

2)- Are there any warning lights coming on when this happens?

 

Ok, the code from the readout is garbage information. The faults are seldom correct. The LCD was never designed to properly display faults codes. International does not support any diagnostics from this display. You need to ignore the actual code number because it is not correct. We have bulletins from International telling us to never rely on the LCD because it will some times report codes that actually do not exist. Only the proper software connected to the truck should be used. ECM's are pretty tough, I do not suspect yours has gone bad. If it is detecting a problem it should have logged at code. Since you are saying a key cycle will temporally cure your problem, it may be electrical. The ECM will only set a fault for low or too voltage. It will not set codes for too low of amperage. The ECM will have power on a few pins to the ECM and ground on also a few pins. There is also the ignition feed. It is possible you have bad power lead, or dirty grounds and the ECM is not getting clean power. All the powers and grounds should be load tested to make sure. The ECM power harness should be inspected from the ECM back to batteries. Inspect all connections and the main ECM fuse. There should be two fuses in the battery box that power the ECM. Check the power and ground wires and connections at the batteries. At the ECM OEM plug there should be power at pins 48, 52 and 53. Ground is at pins 63,65 and 67. Ignition is at pin 70. Make sure you have good stable voltage.