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#1
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1980 300sd boosting problem
I'm having a problem getting my 300SD boosted after sitting all winter. When I turn the key it turns over as if there is very little current (i.e. dead battery). I tried boosting it straight to the battery cables instead of connecting to the battery, and the same thing, except the battery cables became so hot some of the plastic on them started melting......
Any ideas? BTW, I'm boosting from my Dodge Ram 2500 diesel.....
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#2
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Sounds like a bad battery to me. I'd take it to an auto parts store and have it tested.
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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 |
#3
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I bypassed the battery completely.....
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#4
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You may want to temporarily install the good battery, you get better connections that way, I've seen it work. You may also want to replace the cables that got very hot.
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83 SD 84 CD |
#5
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But if I bypassed the battery and went straight to the battery cables, shouldn't I have enough power from a running vehicle to start it?
Something else has to be wrong.
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#6
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Replace your battery. If that doesn't work it could be a burnt out starter solenoid. My car began giving me starting problems this winter, but once i replaced the battery (and primed my fuel system) I've had no more problems.
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1963 Ford F100 - Cummins Swap? 1985 Mercedes 300SD - 210K 1992 Ford Festiva - 92K 2001 Ninja 250 - 8K |
#7
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I can't explain why it won't work by bypassing the battery apart from the fact that booster cables are not designed to carry a full starting load. But when I've run into a similar situation in the past, replacing the battery solved it.
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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 |
#8
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Okay, fine....I can get a new battery.
But if boosting it from a running vehicle without a battery, i.e. STRAIGHT TO THE CABLES doesn't work, isn't that indicative of a different problem than the dead battery that isn't there? I'm not trying to boost the battery, I'm trying to boost directly to the starter.
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#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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I use them to boost the Cummins diesel....I should be able to turn over a small airliner with that engine and those cables.....
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#11
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have you checked your cells? make sure theyre blinking at you.. then boost your battery ombre
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'79 240D '79 300SD those that are missed: '80 300TD bandit '76 300D cleta jill |
#12
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I'd test the existing battery before replacing it.
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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 |
#13
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Battery or not, I can't see starting it if I can't boost it from a running vehicle.
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#14
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I'd agree with this if the cables and connections are the equivalent of the cables and connections on the battery. If they are, then it is the equivalent of having a different battery in the car. Most jumper cables I have seen have neither the connections nor the size to be equal to the battery cables/connections and because of this can't carry an equal load.
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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 |
#15
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Jumper cables, have 3 things agains them. Size of the cable, quality of the connection, and the length of the cable. These all reduce the available power.
It is unlikely that all of the cells in the battery are dead. Hook up the bat in the car, hook up the cables and let it "charge" for 15-20 while the truck runs, and see if it will start. Make sure all of the connections are clean
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83 300SD Dark Silver Dark brown inside |
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