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  #1  
Old 02-02-2013, 04:59 PM
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EMERGENCY: w123 no start

W123 300d no start

Put in park or neutral and not even a click from the starter. What the fudge is going on?!!! I came out earlier and it started just fine. Multiple times. Please advise
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|1983 300D| OM617 239k Miles|Red|"Passion"|
|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|
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  #2  
Old 02-02-2013, 05:26 PM
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.................
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|1983 300D| OM617 239k Miles|Red|"Passion"|
|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|

Last edited by TheDon; 02-03-2013 at 02:15 PM.
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  #3  
Old 02-02-2013, 05:29 PM
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Do you have the junction box on the inner fender in front o fthe battery? If so, jump terminals 1 and 3 after glowing the plugs. If you don't have that terminal box you will have to jump across the small terminal on the starter solenoid to the big main hot wire. Could be your NSS. There are instructions on here somewhere how to jump that above the drivers kick panel.
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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
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  #4  
Old 02-02-2013, 05:30 PM
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Have you tried bridging the starter terminals? There is a little plastic terminal box on the passenger side fender under the hood. Bridge one side to the other and see if it cranks.
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  #5  
Old 02-02-2013, 06:04 PM
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I'll try that I left the car. I think I saw the thread on how to bypass the NSS.

I tried jumping it thinking the battery died but the radio and windows work. However I do not get a spark from it when i touch the jumper cables together ( not hold them. That would be dumb).

After I drop my gf home i get some sand paper and clean all terminals and bring some wire to bypass the NSS).
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|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|
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  #6  
Old 02-02-2013, 06:19 PM
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On my schematic for my w123.133
battery heavy cable goes to starter then to connector 105
red wire from c105 to the Main switch .
then to via a violet and white switch to the transmission switch
Then back to c105 on a violet wire. from there it goes to the starter solenoid

get your voltmeter or tester out.
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  #7  
Old 02-02-2013, 06:20 PM
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Could be a dead battery. Did you leave the lights on? Battery could run the radio and windows but lack the power to engage the starter.
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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
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  #8  
Old 02-02-2013, 06:35 PM
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Is it at all possible that whatever device detects if the car is in Park is messing up? I've forgotten to put my car in park and tried to start it and it's just dead quiet, does nothing. Something else to think about?
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  #9  
Old 02-02-2013, 06:38 PM
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Try what the other guys mentioned about jumping the terminals on the starter. Had my 300D do this a couple times and can't explain it, so now I keep a pair of needle nose pliers with me to jump terminals if needed.
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  #10  
Old 02-02-2013, 06:43 PM
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Nothing was left on. I tried jumping it with no click from the starter. Usually when jumping a car with a low battery at least the starter clicks. And I tapped on the starter solenoid too
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|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|
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  #11  
Old 02-02-2013, 06:44 PM
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What gauge wire should I use? I have pliers but they are not insulates.
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  #12  
Old 02-02-2013, 06:59 PM
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Be careful there jumping terminals. If you short out the battery you will likely melt any wire and hand that is holding it.

Use a 12v test lamp to see which ones are hot and which are grounded.

When I am troubleshooting I usually go to a mid point in the circuit and figure out which side of the fault you are on. Then I divide the distance again. Good luck to you.
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  #13  
Old 02-02-2013, 07:22 PM
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Quote:
Originally Posted by kerry View Post
Do you have the junction box on the inner fender in front o fthe battery? If so, jump terminals 1 and 3 after glowing the plugs. If you don't have that terminal box you will have to jump across the small terminal on the starter solenoid to the big main hot wire. Could be your NSS. There are instructions on here somewhere how to jump that above the drivers kick panel.
I do have that terminal. Now which is 1 and 3 when looking across to the drivers side while standing on the passenger side fender?
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|1983 300D| OM617 239k Miles|Red|"Passion"|
|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|
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  #14  
Old 02-02-2013, 07:27 PM
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Quote:
Originally Posted by Silber Adler View Post
Be careful there jumping terminals. If you short out the battery you will likely melt any wire and hand that is holding it.

Use a 12v test lamp to see which ones are hot and which are grounded.

When I am troubleshooting I usually go to a mid point in the circuit and figure out which side of the fault you are on. Then I divide the distance again. Good luck to you.
could I not just use my volt meter to see if I get 12v's across the two points?

Quote:
Originally Posted by haromaster87 View Post
Is it at all possible that whatever device detects if the car is in Park is messing up? I've forgotten to put my car in park and tried to start it and it's just dead quiet, does nothing. Something else to think about?

that would be the wonderful netural start safety switch. Which will work if you put the car in neutral to start when they go bad.
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|1983 300D| OM617 239k Miles|Red|"Passion"|
|1982 300D Euro|OM617 NA| Thistle Green|"Granny Smith|
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  #15  
Old 02-02-2013, 07:30 PM
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Try first and last.
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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
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