Toyota
Toyota reports that some 2003-04 Celica models with 1ZZ-FE engines and manual transmissions built before VIN JTDDR3#T#40176236 may turn on the check engine light and store random misfire (P0300) and/or multiple misfire (P0301 through P0304) trouble codes in PCM memory.
If hooking up a scan tool doesn't reveal anything unusual and there are no drivability symptoms present, the code(s) is probably bogus and the result of software incompatibility issues in the PCM. Replacing the module with a new unit with revised software, part No. 89661-2G382, is the only reliable fix. Note that Celicas built on or after the above VIN already have the updated PCM and software installed.
Ford
Owners of 2005-06 Ford Expeditions and Lincoln Navigators built before June 13, 2005, may complain of a clunking, grinding or thumping sound from the rear suspension when accelerating, when the transmission upshifts or when the gear selector is moved from drive to reverse or reverse to drive. Ford said the noise may be accompanied by a vibration, and is most likely due to loose torque arm-to-rear axle attaching bolts.
To make the diagnosis, turn off the air suspension switch (if equipped), put the truck on a lift and check the torque arm bolts. If they're tight, this info doesn't apply. Look elsewhere for the cause of the noise/vibration.
If the torque arm bolts are loose, support the rear axle with a jackstand, then remove the bolts and the torque arms. Next, inspect the torque arms for deformation or damage. If either arm is defective, replace it with a new unit, part No. 5L1Z-4612-AA. If the torque arms look okay, reinstall them using four new bolts, part No. 5L1Z-4382-A, then tighten the bolts to 150 ft-lbs.
Honda
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 from low speeds. One likely cause of the noise, reports Honda, is poorly formulated front brake pad linings. Installing new-design pads with a different friction formula, part No. 45022-SHJ-A50, H/C 8303083, should eliminate the groaning noise in short order.
"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].