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Old 08-19-2003, 08:44 AM
frw2209 frw2209 is offline
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Join Date: Aug 2002
Location: New Hampshire
Posts: 5
300 SD Intermittent Glow Plugs

I have a 1985 300 SD that the glow plug light does not come on each time the key is turned on. The engine does not fire indicating it is just not an indicator problem. Is there a procdure to diagnose if this is a relay or switch issue?
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