09-12-2011, 09:26 AM
Join Date: Nov 2004
2016 Cayman GT4
Silencing Noises at Their Source
COOLING fans that could poke holes in the radiators of Dodge Chargers and Magnums, and cases of possible coil spring corrosion in Hyundai and Kia crossovers, are among the mechanical ailments covered in the latest technical service bulletins.
The bulletins, compiled by alldatapro.com, offer automakersí insights into some recurring problems with various models. The bulletins, known as T.S.B.ís, are not recalls; they are information provided by manufacturers to dealersí service departments and mechanics.
Unless otherwise noted, the carmakers do not offer payment assistance for these repairs beyond normal warranty coverage. Alldata.com sells a more comprehensive version of the bulletins to consumers. Here are a few recent examples:
BMW Gear oil from the front differential may stain the driveways of owners of some BMW X3 crossovers. In T.S.B. 310111 issued on June 1, BMW said the leak from the differential vent may be caused by too much internal pressure. Replacing the vent line with a modified part should stop the dripping.
CHRYSLER GROUP Some 2006-8 Chrysler 300s, Dodge Chargers and Dodge Magnums are eligible for new engine cooling fans. In T.S.B. L08 issued on June 17, Chrysler said the fans can separate from the housing and damage the radiator. Owners of affected vehicles should receive letters notifying them about this free repair.
DODGE New right-side door latches may be in the offing for some 2010 Dodge Journey and 2010-11 Dodge Nitro models (and the similar 2010-11 Jeep Liberty as well). In T.S.B. L15 issued on June 30, Chrysler said the vehicles may develop a ratcheting sound when using the power door locks. The latches will be replaced free; owners should receive letters regarding the fix.
FORD A high-speed vibration may be causing shakes in 2009-10 Ford Escapes and Mercury Mariners. In T.S.B. 11-5-25 issued on May 31, Ford said the vibration was from the rear driveshaft. Replacing its center bearing assembly should clear up the problem.
GENERAL MOTORS Some 2008-9 Chevrolet TrailBlazer and GMC Envoy S.U.V.ís may be eligible for an extended warranty on exhaust manifolds. In T.S.B. 11150 issued on July 25, General Motors said a crack may develop in the manifolds of 4.2-liter V-6 engines, causing excessive exhaust noise. The warranty will now be 10 years or 120,0000 for the part, up from 3 years or 36,000 miles. Owners of affected vehicles should receive letters regarding this extended warranty.
Also, some 2011 Buick LaCrosses may need a new battery. In T.S.B. 11186 issued on July 1, General Motors said the batteries on some vehicles may not provide enough voltage, which would prevent the LaCrosse from starting. Owners of affected vehicles should receive letters regarding this repair.
HYUNDAI AND KIA Added coil spring protection may be needed on some 2011 Hyundai Santa Fe and Kia Sorento crossovers. Hyundaiís T.S.B. 11-01-021, issued on June 23, (and T.S.B. SC091 for Kia models, issued on the same date) said that the springs may collect rocks at the bottom where the spring mounts on the strut, damaging the anti-rust coating and leading to a squeaking noise. Installing a spring protection tube should do the trick.
LEXUS Inconsistent brake pedal response may concern drivers of some 2008-9 Lexus LX570 S.U.V.ís. In T.S.B. L-SB-0035-11 issued on June 23, Lexus said the first brake pedal application after the vehicle had been sitting for an extended period may require a longer pedal stroke than normal. The problem is linked to a master cylinder reservoir cap with inadequate venting. Replacing the cap should restore the correct feel.
SUBARU Some 2010-11 models may need a new timing belt and belt guide. In T.S.B. 02-120-11 issued on July 25, Subaru said some 2010-11 Impreza WRX and STI 2.5 Turbo MT models may chirp from the right side of the engine. Replacing the timing belt and belt guide should stop the noise.
TOYOTA Noisy idler pulley bearings may grate on the owners of some 2006-8 RAV4 crossovers. In T.S.B. 0056-11 issued on June 20, Toyota said the pulley bearing assembly needs to be replaced with an updated version of the part.