You almost had it.
Take the plug off the relay ,and test the G1-G4 points in the plug to
ground. SHould be 1.4-1.7 ohms. High resistance, indicates open
circuit, and bad plug. Lower resistance indicates a ground short,
and a bad plug.
If they all went out at once, and the resistance is in the proper
range, then you should look at the 60 amp fuse in the relay. It can
LOOK ok and be bad, so if you can't find another source of the
problem, change the fuse and try that. Your problem could also be a
failed relay or a failed ign switch (rare)
At 10:00 AM 10/2/2009, you wrote:
I don't think the glow plugs on my 82 240D are working. I'm not
familiar with this in parallel system, just the old 220D in series
system. Anyway, I turned the key to glow position and hooked a
voltmeter from the glow plugs (where wire attaches to plug) to
ground on all plugs and got nothing. Then I hooked voltmeter from
G1,G2,G3,G4 terminals in relay box to ground respectively and got
nothing. What else should I do and has my approach been correct so far?
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Loren Faeth
_______________________________________
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