Ic Bus CESB problems and owner complaints

School buses. We have a fleet of these and the condition is happening repeatedly and to almost every bus with this PSI brand 8.8L gasoline engine. The engine exhaust downpipes melt from excessive heat and/or fuel. The pipes then crack and produce an exhaust leak near the body firewall. Potential for exhaust and flame to escape from the pipe.

Look up ODI 11653212 at NHTSA ↗

School Bus- Engine exhaust pipe from the exhaust manifold has melted from excessive heat in the system creating large hole for fumes and potential fire to escape. Exhaust is inadequate for the heat levels from the engine or engine performance is misprogrammed to create excessive heat/fuel. Widespread issue with many school buses in our fleet with the same powertrain.

Look up ODI 11659952 at NHTSA ↗

This is a school bus. Exhaust down pipe from exhaust manifold melted down and created a large hole for fumes and potential fire from excessive heat/fuel issue in engine.

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The roof leaks in several areas. The water gets on the floor and seats increasing the chance that children will slip and fall on the wet floors and seats. This has been to the dealer more than once but the roofs still leak. We have more than one bus of the same age that leak

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The contact called on behalf of the owner of a 2022 IC BUS CESB. The contact works as the district mechanic for the Chase County Schools District. The contact stated that while driving the bus on a rural road, the alarm buzzer sensor on the emergency exit windows activated independently. Due to the rough conditions, the buzzer alarm activated. The windows were not loosened; however, the alarm sounded to indicate a failure. The contact had experienced the failure with the 5 school buses he oversaw. The contact stated that the alarm sound prevent…

Look up ODI 11682383 at NHTSA ↗

THis is a school bus- Exhaust downpipes leading into the catalytic converters melted down and created large holes in the exhaust pipe itself. Extreme heat developed by engine.

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We purchased (6) 2025 IC School buses and we are having entrance door issues. They are air powered doors and Rush Trucks in Akron cannot get the air regulated to close properly. They turn up the air so that the door closes, the doors then slam very hard that may cause injury if student is close to the door. If the air is turned down, the doors do nut shut properly causing issues with the student crossing lights which then sounds an alarm and the lights do not function properly causing the lights to not activate when crossing students. I ha…

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The engine exhaust downpipe melted and cracked- creating a large exhaust pipe hole near the engine exhaust manifold. Releasing exhaust gases and potential flames. This is a school bus and it happens frequently with this model.

Look up ODI 11700729 at NHTSA ↗

Engine exhaust head pipes before the catalytic converter melts down from excessive engine heat, creating a large exhaust hole. This is a school bus

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1. Component: Bus 15 - Right front outrigger. Yes it is available for inspection 2. Safety: Outrigger cracked creating insufficient support of the school bus body 3. We were told it was not covered under warranty and no recalls have been generated and therefore paid for the first repair through Wolfington Body Co. Inc. Their repair did not hold and it came apart and on 8/7/2024 it was repaired a second time, no charge. It came apart again and on 1/30/2025 it was repaired a third time, no charge. 4. The dealer has inspected the bus, we are…

Look up ODI 11730308 at NHTSA ↗

Exhaust leaks caused by calapsed exhaust manifold pipes on 34 IC units with PSI engines. they are wrapped with aluminium covering with insulation. This in turn makes high heat tempuraters that split and burn up and disfigure pipes. Which can cause a fire if any oil leakage or fuel occurs. It also has been snapping exhaust manifold bolts away from manifdolds.

Look up ODI 11743266 at NHTSA ↗

Exhaust system failure,terible exhaust leaks AT EXHAUST MANIFOLDS. Pipes wrapped in insulation and metal causing high temps which are distoring pipe shapes and colapsing systems. Also a fire hazard if any fluids leak on them. These units are 2021's thru 2023's We have been in touch with International Dealer with no avail or help. They give all kinds of why's but no answers. They tell us to replace with same system at 11,000 dollars. These pipes are on 8.8 litre engine. Available for inspection. Yes dealer did see the problem.

Look up ODI 11761570 at NHTSA ↗