Ford issues Technical Service Bulletin (TSB) for Mustangs produced after 2011

Article by Christian Andrei, on July 6, 2011

Ford has issued a Technical Service Bulletin for Mustangs produced after 2011, warning owners about unauthorized modifications made to the power train hardware of the 2011 F-150 and 2011-2012 Mustangs equipped with the 5.0L engine that could exceed component limits.

Typically, a TSB is issued to fix a current problem or defect. In fact, Ford has had three TSBs for these Mustangs for problems with the clutch, fuel pump and cold shifting.

Ford says that these modifications result to the powertrain getting damaged and/or voiding the factory powertrain warranty. If the PCM is recalibrated to raise the output of the engine, it may result in poor drivability or component failures.

According to a Ford representative, “customization is a big part of the Mustang ownership experience” but there could be some damage and the warranty could be voided if the vehicles are modified beyond factory specifications.

To make it clear, Ford can not automatically void the warranty because of aftermarket modifications. The Magnuson-Moss Warranty Act of 1975 states that to void a warranty, it should be proven that an aftermarket part directly caused the original equipment part to fail.

The core of the new 2011 Mustang GT – a 5.0-liter V-8 engine that provides 412 hp and 390 ft.-lb. of torque – is substantially more powerful than its predecessor in terms of output. When mated to a six-speed manual transmission, the 2011 Ford Mustang GT models could return an estimated 24 mpg highway and 16 mpg city. This is basically the same economy but it has a higher output than its 2010 counterpart. When mated to a six-speed automatic transmission, the new Ford Mustang GT could deliver up to an estimated 25 mpg highway and 17 mpg city, which is better than the 23 mpg highway rating of the 2010 Mustang GT.

This generous fuel economy was achieved thanks to the Ti-VCT, EPAS and an extra rear decklid seal that improves the car’s aerodynamics, as well as its lightweight powertrain. In fact, the V-8 engine at 430 lbs weighs over 20 percent lighter than its predecessor, thanks to the use of aluminum block and heads, composite intake manifold and cam covers and hollow camshafts.

EPAS, in particular, does not only contribute to the Mustang GT’s incredible fuel economy, but also to its driving dynamics. After all, EPAS allows for quicker on-center steering response, increased effort at highway speeds and easier steering in low-speed parking maneuvers. On-center steering is also enhanced by a stiffened rear stabilizer bar. Likewise, the new 2011 Ford Mustang GT is provided with an improved lower control arm for extra stiffness, more precise handling and improved powertrain NVH control. It is also provided with stabilizer bar diameters, dampers and spring rates that have been tuned to provide better driving dynamics.

The new Mustang GT could be availed with a Brembo brake package which includes 14-inch vented front discs from the GT500 Mustang as well as distinct 19-inch alloy wheels wrapped in summer performance tires. On the other hand, the new Ford Mustang GT has been given across-the-board improvements in terms of noise, vibration and harshness. These improvements include the installation of extra sound-deadening material on either side of the instrument panel as well as an extra seal between door and rocker panel for reduced wind noise.

Moreover, the Ford Mustang GT features a real wheel arch liner for reduced noise when travelling on gravel or wet surfaces. In terms of structural rigidity, the convertible models of the new Ford Mustang GT feature a 12-percent improvement in lateral stiffness compared to their 2010 counterparts. This was achieved by installing a tower-to-tower front strut brace as well as adding gussets to further stiffen the V-brace. Ford also stiffened the secondary crossmember and added a A-pillar stiffening foam for increased rigidity. In addition, Ford added a front Z-brace to connect the primary and secondary crossmembers.

Barb Samardzich, vice president for Powertrain Development, remarked that the powertrain for the new Mustang GT honors the vehicle’s heritage by increasing its performance and its fuel economy. Drivers would surely welcome the fact that the new 2011 is offered with an array of new convenience technologies like standard message center, MyKey programmable vehicle key and universal garage door opener, as well as illuminated visors, integrated blind spot mirrors and sun visor storage.

The 2011 Ford Mustang GT is recognizable by its new engine cover and 5.0 fender badges. It also comes with a speedometer that could display up to 160 mph and a tachometer with a redline of 7,000 rpm. The 2011 Mustang GT could be finished in any of the available colors, including three new ones -- Ingot Silver, Race Red and Yellow Blaze Tri-Coat.

Topics: ford, ford mustang

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