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2015 Tiffin ALLEGRO BUS Engine Problems, Complaints and Defects

Issue ID	1496297
Internal NHTSA #	11128294
Manufacurer	Tiffin Motorhomes, Inc.
Brand	TIFFIN
Model	ALLEGRO BUS
Model Year	2015
File date	16/04/18
Component	ENGINE
Product type code	VEHICLE
Description of the problem	This is not a single isolated incident. There have been a large number of owners with this issue and the manufacturer has not provided an acceptable solution. *dt on the 2015-2018 tiffin allegro bus on the power glide chassis, a critical design defect exists with the engine fan drive tensioner bracket and tensioner pulley assembly. The fan drive is designed to engage at a pre-determined engine coolant temperature and is utilized to lower engine temperature as the engine coolant temperature reaches a high level. The tensioner bracket is constructed from heavy gauge steel plate that is welded together and the tensioner pulley assembly is a cast/machined aluminum assembly. The assembly weighs over 20 pounds. As designed, the fan drive tensioner assembly cannot sufficiently handle the torque and vibration generated when the fan drive engages. The tensioner bracket and pulley develops micro-cracks that quickly deteriorate into major cracks in the steel bracket and tensioner pulley causing a sudden total failure of the bracket, which in a worse case situation, results in the bracket breaking into several pieces and becoming discharged from the rear of the motorhome at highway speeds. When the bracket fails, the engine fan drive is inoperable, and the motorhome operator experiences a rapid increase in engine temperature and the engine shuts down, possibly causing a loss of vehicle control.. Should the fan drive tensioner and tensioner bracket become dislodged from the motorhome engine compartment, it could strike another vehicle or person causing severe damage, injury, or possible death. To date the manufacturer has been unable to design/provide a fan drive tensioner assembly that will withstand the torque and vibration being generated. The manufacturer should implement a recall of the fan drive tensioner bracket and tensioner pulley assembly,
Vehicle Mileage at Failure	15672
Number of Occurences
Source of the issue	NHTSA WEB SITE
City and State	BLAIRSVILLE, GA
VIN pattern	5VBBAK7A3FAXXXXXX
Was vehicle invloved in a crash?	N
Was vehicle involved in a fire?	N
Was incedent reported to police?	N
Was medical attention required?	N
Was part original equipment?
No. of injured persons
No. of fatalities
Date of purchase	07/08/26
Was original owner?	N
Anti-lock brakes	N
Cruise control	N
Number of cylinders
Drive train type
Transmission type
Vehicle speed	55
DoT tire identifier
Tire size
Location of tire code
Type of tire failure code
Was defective tire repaired?
Date of manufacture
Type of child seat code
Type of restraint
Dealer's name
Dealer's telephone number
Dealer's city
Dealer's state code
Dealer's ZIP code

What is Recall?
A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
What is Failure?
Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
What is Defect?
Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.

Last decoded VIN:

VF1CB1D0F28563149 SCBCS13S3KC074088 WDB2030201F856346 WVWZZZ1KZ5U025829 1J4P45GK4BW587045 5NMSGDABXAH376203 4JGFB4JE2MA523120 WBY71AW060FP08497 KL1TJ6B72BB110392 VF1CN040544386134 1N4AZ0CP6DC417121 WUAZZZF18PD047669

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2015 Tiffin ALLEGRO BUS Engine Problems, Complaints and Defects, Recalls and Failures

2015 Tiffin ALLEGRO BUS Engine Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?