Nissan says that some 2005-07 Xterra, Pathfinder and Frontier trucks with 4.0-liter engines may produce a chirping or squealing sound from the engine compartment.
According to the car maker, the noise usually occurs at first startup in the morning, especially in cold or damp conditions or after extended run times of one hour or longer.
Drive belt slippage is the likely cause of the noise. Installing a revised belt and automatic belt tensioner (part No. 11720-EA200 and part No. 11955-EA20A, respectively) should alleviate the condition.
"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].