1980 300SD blinking glow light
 

My dash glow plug lamp sometimes blinks when turning on the key, rather than staying on solid. The blinking also ocaisionally happens after starting, during driving at speed. Resistance to ground of each of the five glow plugs (measured at the glow plug relay connector) is 0.6 - 0.8 ohms. Car starts fine, but the weather has been warm - 80 to 100 degrees F. What should next be checked?

Thanks,
Jim Jim Jim

RE: 1980 300SD blinking glow light
 

Thanks FI. Replacement glow plug relay has fixed the trouble. So can a defective glow plug relay be disassembled and fixed? Does anyone have a schematic for the internals?

Regards,
Jim Jim Jim