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#1
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Aux Waterpump Amp Draw
Guys, I tested the amp draw on my Aux WP since Jeremy5848 asked me if I had tested it.
Mine varied between .3 and .5 amps. Initial starting draw at engine operating temp was .7 I hope this helps!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
#2
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Pump!
My pump draws 0.9 Amps. I haven't checked the starting surge but it's probably 1.2 to 1.5 Amps. This explains why rrgrassi can use a 1 Amp fuse but I have to go to 2 Amps. It suggests that my pump is getting "old" and may need cleaning (if possible) or replacement.
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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 |
#3
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Check my posts on overhauling the Aux Pump. Its refurbishable. I got pics, too. Also, I might have one to spare. Let me know.
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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth... 2007 Honda Accord EX 2007 Honda Accord SE V6 96 C220 97 Explorer - Found Another Home 2000 Honda Accord V6 - Found Another Home 85 300D - Found Another Home 84 300D - Found Another Home 80 300TD - Found Another Home Previous cars: 96 Caravan 87 Camry 84 Cressida 82 Vanagon 80 Fiesta 78 Nova Ford Cortina Opel Kadet 68 Kombi Contessa |
#4
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I installed a relay triggered by the ACC to drive the aux pump. IIRC, there was a quenching diode installed to keep the ACC protected from voltage spikes created by driving the relay. A relay draws about 0.1amp so theres no way the ACC will ever be damaged. I posted on this quite a while back. RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K |
#5
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An elegant solution!
Quote:
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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 |
#6
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Excellent information fellas. I was just getting ready to put in a fuse and was wondering how big it should be. Now I know.
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1985 300D, 237k. 1994 F-350, 6.9 diesel, 5 spd manual, Banks Turbo. 261k. Sold: 1985 300CD- 267K |
#7
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I used a one-amp fuse in my holder that I installed and it seems to be working fine so far...and my pump is in questionable condition....though I haven't heard it recently....and I've had less heat....hmmmm I should check my fuse!
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
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