Some 1999-2000 Mustangs and 2000 Econoline, Excursion, Expedition, F-150 and F-Super Duty trucks with 4.6- and 5.4-liter two-valve V8 engines may leak coolant from the right/rear corner of the passenger-side cylinder head.
Ford said the problem is limited to vehicles produced from July 1, 1998 through June 30, 2000, and is most likely caused by a small tear in the intake manifold gasket.
Installing a new-design intake gasket made of different materials, part #YL3Z-9439-AA, should eliminate the leak in short order.
Note that the new gasket is for the passenger-side of the engine only, and is not interchangeable with the gasket used on the right side.
Owners of 2005-08 Chevy Colorado and GMC Canyon pickups may come into your store with a complaint that the rear brakes grab or drag excessively during the first few stops in the morning. In severe cases, the brakes may lock up.
One likely source of the trouble, GM said, is glazed brake shoes and/or drums. A problem with the rear brake adjusters is probably contributing to the condition. Correcting the glazing condition and modifying the adjusters should return the brake system to proper operation.
Start the fix by removing the rear brake drums and shoes. Now look at the wear on the rear brake linings. If they look OK, you'll probably notice a mirror-like finish or high spots on one or both drums. Cut or replace the drums as necessary.
Now move on to the brake adjusters. Begin by throwing out the left adjuster and replacing it with a new-design, part #19133371, which has a 15-tooth star wheel.
Don't attempt to install this new adjuster on the right side of the truck; it's threaded specifically for the left wheel. Next, grab a high-speed grinder and put a cut-off wheel into the chuck. Proceed to cut off every other tooth of the star wheel on the right-side adjuster.
To complete the fix, reinstall the adjusters, brake shoes and drums, adjust the rear brakes and go on a road test to confirm that the brakes work properly.
All 2005 Odyssey minivans, as well as 2006 models built from VINs 5FNRL38..6B000001 through 5FNRL38..6B106388 and 5FNRL38..6B400001 through 5FNRL38..6B443036, may produce a groaning sound from the front brakes when coming to a stop at low speeds.
A likely cause for the noise, Honda reported, is poorly formulated front brake pad linings. Machining the rotors and installing new-design front pads, part #45022-SHJ-A50, H/C 8303083, should vanquish the noise immediately.
Some 1995-2000 Millenia models may produce a creak or squeak from the rear suspension when driven over speed bumps or pot holes at slow speeds.
One likely cause for the noise, Mazda reported, is insufficient lubrication in upper trailing link ball joints. A new-design link with a larger ball joint and improved lubricant, part #T001-28-D00B, is now available to eliminate the concern.
Mazda said to install the new links in pairs even if only one side of the car is causing the noise.
Chrysler reported that some 2003-04 2.4-liter Sebring, Stratus and PT Cruiser models, as well as Town & Country, Caravan and Voyager minivans, are prone to fouling their spark plugs during cold engine warmup.
Two new-design replacement spark plugs (Champion RE16MC; NGK LZTR4A-11) are available to put the fouling issue to rest.
Before installing the new plugs, gap them to .040 inch. Chrysler recommended installing new ignition wires along with the new plugs to prevent secondary ignition voltage flashover.
Drivers of 2000-01 Sentra models with SR20DE four-cylinder engines may complain of a rattle or buzz from under the hood.
Nissan said the problem is limited to vehicles built before VIN 3N1BB51DX1L121790 and is most likely due to loose and/or missing exhaust manifold heat shield retaining bolts. Removing the remaining fasteners and installing six, new self-locking bolts, part #14069-7J500, should put a quick end to the irritation.
“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].