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Old 10-17-2002, 09:40 PM
Registered User
Join Date: Aug 2002
Location: Princeton, NJ
Posts: 44
Outside Temp - Please help?

I bought the outside temperature wire and it seems as though the end that plugs into the fuse box is smaller than the current one I saw and it came with a bunch of 'silver' pins and a little black plastic 'thing'

Does this make sense to anyone? What are these for (the pins and the plastic thing) and is it a universal pin size or did I get the wrong part?

I am trying to replace mine on a 88 560 SEL. The current wire is damaged and there is no sensor, hence I got the entire wire.

Pic would be a great help.

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Old 10-18-2002, 06:59 AM
Posts: n/a
McLaren, I just put my sensor on and was wondering the same exact questions. Here's the answer: You have to cut the new wire and remove that small useless plastic piece, expose about 1/4 inch or so of bare wire, take the 2 largest metal pins in the bag an soder the wire into the pins.

Unhook the current wire from it's "snap" connection under the fuse box. Take the plastic snap piece apart carefully and remove it, you will need this to place the new pins into exactly as they are now. It will be pretty much common sense to you when you see the old one.

PS you must soder these pieces AFTER you pull the new temp sensor wire through the holes alotted in the fusebox. Otherwise you will not be able to get the new wires through if you soder first then run through, hope this helps!
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Old 10-21-2002, 08:02 AM
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Join Date: Aug 2002
Location: Princeton, NJ
Posts: 44
Thank you Tank!

Got the Temp sensor going - it is off a few degrees, but that is fine.

Thanks for your help.
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Old 10-21-2002, 03:26 PM
Posts: n/a
You are very welcome.

I am wondering why it's off though? Two cases where I have heard of this: #1 The sensor usually attaches to the fron lic plate frame. If mounted on the inside of the bumper it may be getting a reading from the heat off the engine. #2 When it is not sodered (simply crimped) or sodered somehow incorrectly. o and #3 perhaps the display inside the cosole could be bad? That's my guess.
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Old 10-22-2002, 08:03 PM
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Join Date: Aug 2002
Location: Las Vegas Nevada
Posts: 256
Wink temp sensor

Hi guys, this may help you .when I changed the temp sensor on my 88 300e I did not cut the wire! I left its full length and coiled it in the engine compartment and secured it with wire ties. from my experience working on aircraft when you change the length of a wire you change the resistance and you change temp with the resistance. just like jet engine exaust gas temp sensors.alot of aircraft antennas are like this also.if you shorten a radio altimiter cable length the air craft will think its not as close to the ground as it is.this is not as critical on a benz temp sensor but mine is right on the money!
88 W124 3.0
96 R129 119eng
06 ML350
98 ML320 sold
02 CLK55 amg
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