Attention: TDR Forum Junkies 
Hey all, I didnt have any luck in the 2nd gen engine forums, so I'll try here.
I have a bus that came into my shop a few days ago. It has a 2001 ISB 5. 9L in it. Origionally, it came in for lack of power, so we did a full service on it, and found the #5 injector line had been worn through and was spraying fuel all over the place. Replaced the injector line, and that's where things got weird.
After the fuel line, it didn't want to start, found that the lift pump had also failed. Replaced that, got the thing started, and now when you start it, it idles rough, or lopes almost, like an old big block with a nasty cam. It will run like this for about 15 seconds and then shut down, every time. Also, I have no throttle control after start up.
Pulled codes, and all I found was a code for boost pressure sensor voltage above normal, or shorted high. Replaced the bad sensor, and no change. Ran a data stream with Cummins Insite. When started, the rpm ranges between 550-800, for uabout 15 seconds, the shuts down. Everything else checks out. This thing had the VP44 replaced last summer, along with the crank and cam posistion sensors. Ran alright, except for lack of power, when it came in. Almost acts as if there is air getting into the fuel system, but I've checked, double checked, and triple checked all of the fuel lines, connections, filter housings and every where else I can think of.
Any input would be greatly appreciated! I'm about to light this thing on fire and push it off a cliff.
Thanks!
Kevin
I have a bus that came into my shop a few days ago. It has a 2001 ISB 5. 9L in it. Origionally, it came in for lack of power, so we did a full service on it, and found the #5 injector line had been worn through and was spraying fuel all over the place. Replaced the injector line, and that's where things got weird.
After the fuel line, it didn't want to start, found that the lift pump had also failed. Replaced that, got the thing started, and now when you start it, it idles rough, or lopes almost, like an old big block with a nasty cam. It will run like this for about 15 seconds and then shut down, every time. Also, I have no throttle control after start up.
Pulled codes, and all I found was a code for boost pressure sensor voltage above normal, or shorted high. Replaced the bad sensor, and no change. Ran a data stream with Cummins Insite. When started, the rpm ranges between 550-800, for uabout 15 seconds, the shuts down. Everything else checks out. This thing had the VP44 replaced last summer, along with the crank and cam posistion sensors. Ran alright, except for lack of power, when it came in. Almost acts as if there is air getting into the fuel system, but I've checked, double checked, and triple checked all of the fuel lines, connections, filter housings and every where else I can think of.
Any input would be greatly appreciated! I'm about to light this thing on fire and push it off a cliff.
Thanks!
Kevin
