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#1
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Block heater season! '97 E300
I bought this block heater cord from NAPA auto parts.
https://www.napaonline.com/en/p/KAT28216 I used it for the first time last night, 22F when I started the car this morning. Seem to take about the same 5 seconds as always for the glow plug light to go out before starting. No appreciable increase in warmup time while driving. Is the cord too small/weak to make a difference? Maybe it's not making good contact at the block heater element? (I hit it with a wire brush before installing, but the prongs looked pretty corroded and/or crusty.)
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NOW: 2017 C43 AMG, 2006 Wrangler Unlimited Rubicon, 1966 230SL, 1980 450SL (for sale!) PAST: 2006 C230, 1997 E300D, 1994 E420, 1994 Neon Spt Cpe, 1984 300ZX, 1983 Celica GT, 1976 Electra Limited, 1984 Honda Nighthawk 650, 1979 Suzuki PE175, 1978 Suzuki DS100 www.mbca.org - www.sl113.org - www.ohio4x4.com |
#2
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The heater in my '96 makes a pretty noticeable difference in glow time and starting ease. It works better in an enclosed or semi-enclosed environment, a place where the vehicle is shielded from winds. One thing you can do to verify if it's working or not would be to plug it in for at least a couple hours, then pop the hood and feel the engine. It'll feel warm to the touch if you've got a working heater.
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- Greg - 1973 220D, The Prodigal Benz 1974 240D |
#3
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I'm not sure about your model, but earlier versions used outside air temperature to determine glow cycle time. If that's the case, you might not see a difference with that.
A bit of silicone dielectric grease should help with the corrosion problem.
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Sam 84 300SD 350K+ miles ( Blue Belle ) |
#4
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How long did you have it plugged in?
I remember by E300 would be plugged in for about 2 hours and the top of the engine was warm to the touch in 25* ambient
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Allen Kroliczek Oak Grove Autosport | Oak Grove Autosport 01 G500, 82 300TD, quite a few more..... |
#5
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Plugged in 12 hours. I never felt the motor.
Parked outside. Dielectric grease sounds like a top tip! Keep that darn water out and keep a good connection. If you look at the product page link, it has the cable size. I think it means 16 gauge wire. Is that typical for this application? I'm buying an outdoor timer tonight so I can run the heater for a more reasonable 3 hours tomorrow morning.
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NOW: 2017 C43 AMG, 2006 Wrangler Unlimited Rubicon, 1966 230SL, 1980 450SL (for sale!) PAST: 2006 C230, 1997 E300D, 1994 E420, 1994 Neon Spt Cpe, 1984 300ZX, 1983 Celica GT, 1976 Electra Limited, 1984 Honda Nighthawk 650, 1979 Suzuki PE175, 1978 Suzuki DS100 www.mbca.org - www.sl113.org - www.ohio4x4.com |
#6
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The new timer from the big orange store works fine. I have one of those extension cords with a clear plug with a light. Anyway, after almost 3 hours in 22F - 25F temps, nothing on the engine felt warm. If my NAPA part is faulty, can't I tell that with a multi-meter? I'll try to test that, and clean up the prongs on the connector, this weekend. I'm going to see some people at an MBCA meeting tomorrow who might have a thermal sensing gun for testing.
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NOW: 2017 C43 AMG, 2006 Wrangler Unlimited Rubicon, 1966 230SL, 1980 450SL (for sale!) PAST: 2006 C230, 1997 E300D, 1994 E420, 1994 Neon Spt Cpe, 1984 300ZX, 1983 Celica GT, 1976 Electra Limited, 1984 Honda Nighthawk 650, 1979 Suzuki PE175, 1978 Suzuki DS100 www.mbca.org - www.sl113.org - www.ohio4x4.com |
#7
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Measure the resistance of the block heater from the plug end of the cord. Should be somewhere 15 to 30 ohms if all is good.
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
#8
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"Measure the resistance of the block heater from the plug end of the cord. Should be somewhere 15 to 30 ohms if all is good."
From the plug end of the cord to ....... what? Not sure what you mean. I assume I'm measuring resistance within the cord, not the block heater itself. But, where exactly am I placing the probes of the multi-meter?
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NOW: 2017 C43 AMG, 2006 Wrangler Unlimited Rubicon, 1966 230SL, 1980 450SL (for sale!) PAST: 2006 C230, 1997 E300D, 1994 E420, 1994 Neon Spt Cpe, 1984 300ZX, 1983 Celica GT, 1976 Electra Limited, 1984 Honda Nighthawk 650, 1979 Suzuki PE175, 1978 Suzuki DS100 www.mbca.org - www.sl113.org - www.ohio4x4.com |
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