Interchange Part Number: 4268716, PVS142, 7P1091. 229223, E9066
Ported Vacuum Switches are temperature-sensitive devices which control various vacuum actuated components. A bad or failing Ported Vacuum Switch can cause poor performance and economy, surging, chugging and engine knock. Maintenance/Service: Inspect for damage every 6,000 to 8,000 miles. Check for cracked or broken vacuum ports. Function test if engine overheats.