2005 Ford F150 P0022 Code: Stalling Issues After VVT Solenoid Replacement
My 2005 Ford F150 developed a check engine light last week. Upon connecting an OBD2 scanner, I received a P0022 code indicating a Variator Valve Timing (VVT) solenoid issue. Most online sources recommend replacing the VVT solenoids as a fix. However, after installing new solenoids, the truck began stalling twice during stops—same conditions as before. In fact, it has now stalled twice in the past 24 hours under identical circumstances. I'm concerned that the replacement may have worsened the problem. Any insights or troubleshooting steps would be greatly appreciated?
Are you still seeing the P0022 code? Are there any additional diagnostic codes present? Have you checked for 12 volts at the solenoid terminals? What did the old solenoids look like—any visible sludge or gum buildup? All VVT systems rely on oil pressure—make sure your engine oil is adequate. Consider using a detergent additive such as Rislone to reduce varnish and gum deposits. Did you verify 12 volts at the solenoid terminals? Note: One wire should have constant 12V, while the other should be open circuit (not grounded or showing voltage).