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1973 r107 350SL
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Discussion Starter #1
Hi about 12 months ago I asked if anyone could help with a problem I had with my r107 350sl 1973 , it would start and run until the temperature gauge got to a point and then it would stop until it cooled down then it would start and do the same.
We found out that it was a sensor that would short out at that temperature and send a message to the computer to shut down, the sensor is a Bosch part number 0 280 130 014 . Put this information in your memory bank just in case it happens to you.
Cheers Ross
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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32,169 Posts
Thanks but what is the Mercedes part number and where is it on the engine?
 

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Registered
1973 r107 350SL
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4 Posts
Discussion Starter #3
Thanks but what is the Mercedes part number and where is it on the engine?
Thanks but what is the Mercedes part number and where is it on the engine?
I don’t know the Merc part number but it is in the valley cover water jacket front RHS under air cleaner and has 2 wires going to it and needs 13mm long socket to remove it
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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32,169 Posts
That is probably Mercedes 002 542 21 17. Pictures of the two are the same.
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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10,178 Posts
Coolant water temperature? Bad reading could throw off mixture control.
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Joined
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32,169 Posts
Coolant water temperature? Bad reading could throw off mixture control.
I think it is Temp. sensor #2. You posted a picture of the location in the past. It is forward of the thermo time switch.
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
Joined
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10,178 Posts
That would be it. #1 is on the air cleaner. #2, the coolant sensor, has the most affect on mixture. Both can be checked (and should be if owner has problems) using the resistance vs Temperature curves that are in the engine manual. Harness leads and connections should also be checked.

I once found a Porsche dealer that was closing down. They had several NOS parts that were same as our 107 Djets use. I bought both temperature sensors and installed them. Have the old ones as spares.

Good Heads Up Ross.
 
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