Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
What is the engine serial number? Any fault codes present? How have you determined a low power issue?
What year is this cummins isx450? Is it equipped with an EGR system?
Your problem is likely your EGR valve sticking open. Do you have a laptop with Cummins Insite available?
Hi there ! My name is ***** ***** you still need help ?
ANy codes at all? An engine light on ?
No codes makes it very difficult to know exactly where the problem lies . I would connect with insite program if you can and see what codes are in there if any along with checking their time stamp to see exactly when those codes occurred . Some codes do not cause an engine lamp to come on but are still recorded in memory .
I will send a performance troubleshooting tree to help you figure this out.
Hi there . Looking for an update on this . Any luck ?