NHTSA recall 97E010000 · Equipment
Fuel system, other
The defect
Equipment description: 8.1 liter compressed natural gas (CNG) engines. the electronic control module (ecm) in these engines contain a manufacturing defect which results in intermittent electrical contact and causes incorrect electronic signals to be sent to the engine throttle control.
The risk
This condition can create the potential for sudden acceleration or deceleration of the engine increasing the risk of a crash.
The remedy
Dealers will install a new, improved ecm and associated hardware. however, due to the potential serious consequences, all buses powered by these CNG engines must be immediately removed from service.