Thanks Mitch,
I will check the electrics as you suggested but all the symptoms point
to a dead GP Relay. This is my wife's daily driver - she is ready to
retire and not in the mood for thinking about spending money on another
car - but she needs to get another ~3 months out of this car. After
that daily miles will drop substantially which will make maintenance
easier. But that's another story ;-)
I'm heading back to the garage for more troubleshooting. Hopefully I
will have more to report in the next 3 hours.
Thanks,
LarryT
On 12/26/2016 8:23 AM, Mitch Haley via Mercedes wrote:
Check for voltage to the plugs.
If you've got that, unplug the glow plug harness and check for current draw from
each plug.
A dead relay, bad fuse etc would leave you glowless.
A dead plug or two shouldn't stop the car from starting when it's barely
freezing weather but it won't idle smoothly until it's warmed up.
Mitch.
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