Ok, so after I replaced seal washers and o-rings in the IP valves last night the engine required quite a bit of cranking to get it going, as expected. At any rate, the glow plug light came on and during the first cranking sequence I let it cycle completely but on subsequent cranking attempts, perhaps two more 5+ second cranking attempts, I didn't wait for it to go out.

I didn't think too much about it and I drove it home and parked it. I plugged it in last night, -7F, so that it would be warm in the morning. When I went to go to work this am the glow light did not illuminate as usual even with block heater.

I tested today and found one glow plug out of spec, high ohms but not enough that it should have faulted the whole system so I checked voltage output at the controller with ignition on and found each plug was only getting 8V, not the 12V+ that they should be receiving.

I have to assume that the glow controller is toast although since I don't know what other inputs the glow controller sees (water temp?) I can't be certain.

Am I correct in that the glow controller is shot or is there something else I should check?

Thanks
Steve A

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
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