Thread: 98 E300 glow plugs don't heat up
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Old 09-05-2008, 04:44 PM
TMAllison TMAllison is offline
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Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
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Go to dieselgiant.com and follow the testing tutorial there for the W123 GP's. Relay looks a tad different on the W210 but the principals are the same.

You'll need a multimeter.

The K40 relay is in the right side computer appratus box under the hood. Front most unit. I doubt it is the culprit in this instance. It feeds power to many systems similar to what the older OVP relay used to do.
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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
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