1980 300SD blinking glow light

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1980 300SD blinking glow light

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Mercedes Forum >> Mercedes Benz Models >> Diesel Discussions >> 1980 300SD blinking glow light

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1980 300SD blinking glow light - 9/4/2008 8:58:21 PM

jim x 3

Posts: 5
Joined: 6/13/2008
Status: offline

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

Post #: 1

RE: 1980 300SD blinking glow light - 9/8/2008 6:11:04 AM

ForcedInduction

Posts: 844
Joined: 5/20/2006
From: Federal Heights, Colorado
Status: online

Try getting a used glowplug relay and swapping it with yours.

_____________________________

1980 240D 3.0VNT 222K Miles. OM617.95, GT2256V VNT turbo, 4-speed manual, 3.46 diff, 15mm rear swaybar, ALDA removed, no EGR and Amsoil by-pass oil filter. Currently 107HP and 195lb/ft of torque at the wheels.

www.youtube.com/Turbo617

(in reply to jim x 3)

Post #: 2

RE: 1980 300SD blinking glow light - 9/23/2008 6:47:46 PM

jim x 3

Posts: 5
Joined: 6/13/2008
Status: offline

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

(in reply to ForcedInduction)

Post #: 3