Certain buses have stainless steel hydraulic lines with 90º flange fittings which are subject to failure due to errors in both the design and manufacture of these lines.
Engine & cooling
New Flyer D40LF Engine problems by year
1 complaints filed with NHTSA about the New Flyer D40LF's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
Engine complaints by model year
Engine recalls
On certain transit buses built with cummins isl and isc diesel engines equipped with the cm850 fuel system, the engine high pressure fuel lines, from the engine high pressure pump to the engine fuel rail, are prone to failure.
On certain transit buses manufactured with detroit diesel series 50 engines, the electronic control module (ecm) will need to be reprogrammed to activate the exhaust temperature sensor.
On certain transit buses, hydraulic fluid can leak at the flange fitting due to improper installation procedures. Incorrect installation procedures may cause damage to the o-ring of the flange assembly, compromising the sealing capability of the o-ring.
On certain transit buses equipped with detroit diesel series 40 engines, the turbocharger can fail allowing lubricating oil to spill onto the engine.
On certain transit buses equipped with webasto heaters, the burner tubes are made of material that does not meet specifications and could fail prematurely.
Latest D40LF engine complaints
Body of the coach is falling apart due to the nuts that hold the floor down are coming apart. Also, there is a leak which is coming from seals to the engine head gasket that go around the water that is leaking. In addition, emergency brake doesn't work. *Ak
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