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#1
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Wiring A Block Heater?
My 1986 190d 2.5 5spd runs great when warm, but is rough to start this time of year. I've learned all engines left the factory with a block heater installed, but the cord to connect the block heater to electricity was a dealer installed extra. Mine has no cord. Does anyone know where to find the cord and how to install it? Can a cut 10 gauge drop cord be retrofitted?
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#2
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not ALL engines had a block heater. yours may, though. on a 617, it is on the drivers side of the block. you should be able to spot it if there is one, and you can order a cord from this site.
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1984 123.193 372,xxx miles, room for Seven. 1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven. |
#3
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I've never seen a diesel that didn't have a block heater. It is typically at the rear passenger side. All you need is a power cord with eyelets on one end and a regular 110 plug on the other. Route it carefully so it doesn't get exposed to something hot or get caught in the rotating works.
Since the late seventies that I know of, the heater was there, but you had to request the cord be connected upon taking delivery of the car. There was no charge. |
#4
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Most of the online MB parts stores have them (FastLane, buymbparts, etc), even the dealer might. I paid something like $13 for mine online. I just wish I was able to use it (apartment)
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Dan 2005 E320 CDI - 246k 1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k Past: 1987 300D - 264k |
#5
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Mine doesnt have one- well- not a plug in one, anyways.
it was equipped w/ a webasto, but that's been removed by someone else.
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1984 123.193 372,xxx miles, room for Seven. 1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven. |
#6
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My wife's 81 300D doesn't have one. And believe me, I"ve stared holes in that darn freeze plug hoping one would suddenly appear!
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"Knowing is not enough, we must apply. Willing is not enough, we must do." Goethe *********************************** 1951 Chevy 3100 2003 Indian Chief Roadmaster 1983 GMC 1 ton Dually 1982 Chevy 1 ton Dually, service body (sold) '90 GMC Suburban 6.2 "SS Veg-Burban" (single tank WVO\diesel conversion) SOLD '81 300D ~ Mama's car...my job (now my car)(but still my job) SOLD '83 300sd ~ rescue car SOLD 2005 Ford Taurus (Mama's new car)(NOT my job!) |
#7
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The cord is a Zerostat one, has a round aluminum ring around it to lock it to the heater. Available at many part stores, Detroit Diesel used the same one for many years.
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Gone to the dark side - Jeff |
#8
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Does anybody have a picture of an installed block heater on an om602? I looked on both sides of the block--freeze plug on the passenger side and nada on the driver's side. There is some kind of sensor going into the oil pan on the driver's side with a wire coming off, but doesn't look like a block heater...
If in fact I find out that I don't have a block heater already installed, does anybody know where to get one for a 602, or am I going off to the junk yard for this one? |
#9
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Quote:
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#10
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There's a threaded plug in place of the block heater, not a freeze plug. Perhaps you are looking in the wrong place.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#11
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Quote:
OTOH, the 60x engines, including yours, should have had a block heater installed at the factory. Right side of the block, down low and covered with a plastic cap that unscrews. (The thing on the right side of the oil pan is the float switch for the oil level warning light in the instrument cluster.) Original purchasers of a car with a 60x engine could have the dealer install a cord for free. Again, it was a one-year offer. The cord is available from a Mercedes dealer or from the aftermarket. The dealer's cord is at least 2X aftermarket price but includes a screw-in retainer and heat insulation for the cord. For those whose engines didn't come with a block heater, the lower radiator hose version is much easier to install. After 20+ years, the plug that is in the block will be very hard to remove and there is anecdotal evidence that people have actually broken a piece out of the block while trying to get the plug out. Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#12
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It's at the rear of the block, half-way up, on the passenger side. It will have a black cap screwed onto it about the diameter of a garden-hose connection.
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Gone to the dark side - Jeff |
#13
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My engine does have a block heater installed (as should all OM6xx engines) on the passenger side. I was able to order the cord from a mercedes dealership for about $50. I'm going to put it on and plug it in when I get home from work tonight. It's supposed to be 10 degrees tomorrow morning, so we'll see if it works......
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#14
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The CDI engines don't have them in the USA and I'd bet the V6 versions don't in Canada, either.
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Kent Christensen Albuquerque '07 GL320CDI, '10 CL550. '01 Porsche Boxster Two BMW motorcycles |
#15
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When you plug it in you can hear it sizzle. Pop the hood and listen for the sizzle as soon as you plug it in.
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2009 ML320 Bluetec 1985 300CD 1981 300TD Past Mercedes 1979 300TD 1982 300TD 2000 E320 4Matic Wagon 1998 E430 1984 300SD 1980 300SD |
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