The 617.95 FSM tells a different story. Normally, only one failed glow plug will trigger the fault indication. In extreme cases, two failed plugs may be required. For sure, failure of the #1 glow plug should trigger the fault indication under any circumstance.

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When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.

I've timed them several times and every one was 30 seconds of current to the glow plugs, the indicator lamp goes out sooner .

There's an adjusting screw with 10MM ATF jamb nut on it, I've never touched that .

I've had a few of these relays fail, because they're over $100 I bought used ones and so far so good, twenty years and counting .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Can a faulty relay cause this issue as well?

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D

I don't know ~ I've had one glow plug fail and cause the lamp to blink, another time the light didn't come on at all for one glow plug gone open circuit .

This presumes parallel glow plugs ~ the series ones you loose one plug it's the same as all = open circuit .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better