What should I do if my glow plug is not working?
What should I do if my glow plug is not working? But the PCM continues to provide power to the glow plugs for as long as 180 seconds to pre-heat the combustion chamber—even though the “wait” light is off. If you suspect a problem with the glow plug system, start here: 2.At the glow plug connector (GPC) on the right side valve cover, check for battery voltage on the large black/yellow wire. Why does my 7.3L PowerStroke not start cold? The #1 reason a 7.3l will not start cold, followed by a close second being stiction issues with the HEUI...