Vehicle description: heavy duty trucks equipped with t444e diesel engines. A fuel leak can occur because of overcrimping of the hose end fittings on the hose from the regulator to the left head and the hose from the fuel transfer pump to the regulator.
Engine & cooling
Navistar 3400 Engine problems by year
0 complaints filed with NHTSA about the Navistar 3400's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data