Some 2009 1500-2500 series Dodge Ram pickup trucks and 3500 series cab chassis with 5.7L engines may turn on the Check Engine light and store trouble codes P1004, P2016 and/or P2017 in PCM memory.
According to Chrysler, the trouble typically afflicts vehicles built before 4/29/09, and is due to the intake manifold's short runner valve (SRV) harness not being long enough to handle normal flexing as the engine rocks on its mounts during acceleration. That leads to stress on the SRV and its connector, which causes an intermittent connection and the problems noted. Wiring in an extension harness from a kit and replacing the SRV should eliminate the condition. Order part No. 68064996AA for the wiring kit and part No. 53022137AF for the SRV.
The owner of a 2007-09 Saturn Sky Redline may come into your store with a complaint that the overheat warning lamp is on and/or that there is insufficient heat coming from the heater.
One likely cause for the overheating, says Saturn, is an airbound cooling system. The air frequently ends up as pockets in the heater core, which results in the lack-of-heat complaint. Installing a new check valve, part No. 20876185, into both ends of the coolant return hose should eliminate the trouble. When installed properly, the check valves should be positioned vertically, with the tapered ends facing the nipples of the engine port and radiator.
The owner of a 2006-09 Focus may come into your store with a complaint that the power steering system is unusually noisy. If he does, check the power steering reservoir for a low fluid level. If the reservoir is low, says Ford, one likely cause is a leaky O-ring on the inlet side of the reservoir. The O-ring leaks because of burrs in the steering pump bore. Removing the burrs with fine emery cloth and replacing both reservoir O-rings, part No. 6S4Z-3F886-A, is the reliable fix.
"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].