Quote:
Originally Posted by NZScott
My '78 uses the old loop style relay with pencil plugs - the timer doesn't work properly, and keeps the glow plugs on all the time until the starter is cranked, then they're off until the ignition gets reset again. Might be something similar, although mine doesn't keep them on with the ignition off.
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Have you replaced/checked the temp sensor that is in the head? The older loop style relays use an external sensor that plugs into the head near the injection pump. If this is disconnected or bad the relay will not be able sense the temp of engine to know how long to stay on or go off...