Steve_Miller
Veteran Member
Anyone know what exactly the preheater controller does? Does it control another relay that actually powers the glow plugs for a predetermined time? Having trouble with this circuit, I have no glow plugs at the moment (starting with my heatgun shoved in the air intake). I've tapped (aggressively) on the controller box and it fired the glow plugs and started once but haven't got it to do that again. Glow plugs are fine, light on dash comes on like it is timing. I'm out of warranty so I'm trying to troubleshoot on my own. I have the copy of the service manual that someone provided online here a year or to back but it is not exactly the same layout on the firewall as mine. Any help would be greatly appreciated.
Thanks
Steve
Thanks
Steve