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Old 11-18-2008, 10:56 PM
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tankowner tankowner is offline
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Join Date: Dec 2007
Location: Columbia, MO
Posts: 907
Quote:
Originally Posted by 300sdToronto View Post
Plug it in when it's quiet around. You should hear a faint "singing" just like an electric kettle......

Yup, I agree - easiest way to know if your block heater is working is to plug it in and listern. Do it some place quiet so you can hear the faint sizzle and humming noise as it heats up. Easy to hear if you are under your car - like when you change your oil or something.
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'95 E300D ("Tank") - 231,000 miles
'79 240D ("Biscuit") - 197,250 miles (Sold)
'83 240D ("Ding-Ding") - 217,000 miles (Death by deer)
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