Some 2008 Dodge Magnum, Dodge Charger and Chrysler 300 models with 5.7-liter V8 engines may take a long time to start, especially when cold. Chrysler says if the ignition and fuel systems are operating properly, the check engine light is off and there are no trouble codes stored in computer memory, chances are the crank synchronization algorithm in the PCM is causing the starting difficulties. Reprogramming the module with updated software is the only reliable fix. Check with a dealer for the specifics of the flash.
The brake pedal on a host of 1998-2011 GM trucks with hydroboost braking systems may move or self-apply when the vehicle is in tight or full-lock turns.
One likely cause for the trouble is a sticking dump valve in the hydroboost assembly. Contaminants in the power steering fluid are what cause the dump valve to stick. Since flushing the fluid won't completely remove the debris from the dump valve, installing a new hydroboost assembly is the only true fix, says GM. Before replacing the unit, make sure you flush the power steering pump, lines, cooler and gearbox to prevent the new hydroboost assembly from suffering a similar fate.
Vehicles that are prone to the condition include 1998-2005 Chevy Astro and GMC Safari vans, 2003-07 Hummer H2s and all 1998-2011 Chevy and GMC full-size pickup trucks, SUVs and vans.
Drivers of 2008-11 Rogue SUVs built on or before April 26, 2011, may complain of fuel gauge troubles. Among the comments you might hear are that the gauge never reaches the Full mark after the tank is filled; the gauge takes a very long time after a fill-up to register full; or the gauge remains on full for too long a period after a fill-up (100 miles or more).
According to Nissan, all these problems are the direct result of signal abnormalities in the fuel gauge sending unit. Replacing the sending unit with an updated design should eliminate the gauge issues. Here are all the parts you'll need to complete the fix: Part No. 25060-JM01D (fuel gauge sender, two-wheel-drive); Part No. 25060-JM12A (fuel gauge sender, all-wheel-drive); Part No. 25060-JM10D (fuel gauge sub sender, all-wheel-drive); and Part No. 17342-EM30A (O-ring).
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].